Cliff Notes — 2025 NFHS Football Rules Book

July 26, 2026

Rules

A condensed study guide to the full rules book.

Rule references (9-4-3m) are rule-section-article and match the source text.

This is a study aid, not an authority — for any ruling that matters, read the rule itself, and remember that your state association is the only binding interpreter of these rules.

1. The game in one minute

Team designations used throughout:

• A = team snapping the ball
• B = itsopponent;
• K = kicking team,
• R = receiving team. A1/B1/K1/R1 are individual players.

2. What changed for 2025

From COMMENTS ON THE 2025 RULES CHANGES:

Editorially, forceful contact against a defenseless receiver moved from Rule 2 (definitions) to 9-4-3p (conduct), so the foul is defined by the contact, not by the tackler's technique.

2025 Points of Emphasis: illegal and improperly worn equipment (escalating options: replace the player for a down → delay of game → unsportsmanlike on the head coach); sportsmanship (penalize prolonged, choreographed, opponent-directed acts without warning — allow brief spontaneous emotion); defenseless players/targeting (responsibility rests with the player initiating contact; when in doubt, flag it).

3. Rule-by-rule cliff notes

Rule 1 — The Game, Field, Players and Equipment

• Field: 4-inch lines; restraining line ≥2 yards outside the sidelines/end lines; team boxes between the 25-yard lines with a 2-yard coaches' area that is restricted while the ball is live; 3-yard try line centered ≥24 inches; pylons 4 inches square, 18 inches high at goal-line/end-line/hash-mark intersections. Logos may not obscure required markings.
• Ball: tan, pebbled or approved composition, 14–15 oz, inflated 12½–13½ psi, 1-inch white/yellow stripes; NFHS authenticating mark required for 9th grade and above. Referee judges legality; any official may order it changed.
• Player designations: field captain is the only player who may talk to officials; numbers 0–99 (leading zero illegal); the head coach names a penalty-decision representative for the whole game.
• Mandatory equipment: NOCSAE helmet with 4-point chin strap and warning label; jersey covering pads and tucked in (visitors white body, home dark); numbers ≥8" front / ≥10" back; hip/tailbone, knee, shoulder, thigh pads; single tooth-and-mouth protector; pants covering knees; legal shoes/cleats.
• Illegal equipment includes jewelry (religious/medical items taped and worn under the uniform), tinted eyeshields, ball-colored items, hard braces without ½-inch closed-cell padding, uncovered back/rib pads, tear-away jerseys, slippery substances, non-conforming towels, play cards not on the wrist/arm, and anything not worn as the manufacturer intended.
• Pregame verification: the head coach certifies to the referee and another official that all players are legally equipped. Missing/improperly worn equipment → official's time-out and the player is replaced for at least one down (repairs under 25 seconds excepted).
• Coaches may use electronic devices; communicating electronically with a player is legal only during an outside 9-yard mark conference.
• Table 1-7 lists the 16 state-association adoptions (officials' count, ball mandate, instant replay in postseason, overtime procedure, point differential, halftime length, TV/radio time-outs, small-sided field dimensions, …).

Rule 2 — Definitions of Playing Terms

The vocabulary chapter — 45 sections. The ones that decide plays:

• Catch = possession of a ball in flight + first contact with the ground inbounds (or forward progress stopped while being carried by an opponent). Catching is always preceded by touching, so if the touch made the ball dead, later possession is meaningless.
• Blocking: closed-hand and open-hand techniques defined (hands inside the frame, at or below the shoulders, in advance of the elbow). Blocking below the waist = initial contact below the waist from the front or side (opponent with a foot on the ground). Chop block = two teammates, one high one low. Blindside block = block on an opponent who does not see it coming. Clipping = from behind at or below the waist; block in the back = inside the shoulders, below the helmet, above the waist.
• Free-blocking zone: 4 yards either side of the snap, 3 yards behind each line. Below-the-waist blocks require all involved players on the line and in the zone at the snap, contact in the zone, immediate action. The zone disintegrates once the ball leaves it.
• Defenseless player (2-32-16): especially vulnerable by position and focus — passer, receiver attempting a catch, the intended receiver during/just after an interception, a runner in the grasp with progress stopped, a kick returner, a player on the ground or sliding feet-first, a player out of the play, a player taking a blindside block with forceful contact not initiated with open hands. When in question, a player is defenseless.
• Illegal helmet contact = butt blocking, face tackling, spearing. Targeting = taking aim and initiating contact above the shoulders with helmet, forearm, hand, fist, elbow or shoulder.
• Kicks: free kick, scrimmage kick, place kick, drop kick, punt, illegal kick, pop-up kick (illegal). A kick ends when a player gains possession or the ball becomes dead.
• Fouls: dead-ball, double, flagrant, live-ball, multiple, nonplayer/ unsportsmanlike, player, post-scrimmage kick (PSK), simultaneous with the snap. No foul causes loss of the ball, and no foul makes a live ball dead.
• Spots that drive enforcement: previous, dead-ball, inbounds, out-of-bounds, succeeding, spot of the foul, post-scrimmage kick spot, end of the run.
• Loose-ball play vs running play (2-33) — the distinction that selects the basic spot in Rule 10.
• Neutral zone: the ball's length at scrimmage, 10 yards on a free kick; may expand up to 2 yards behind the defensive line after the snap (never into the end zone on a scrimmage kick).

Rule 3 — Periods, Time Factors and Substitutions

• Coin toss 3 minutes before kickoff (≤4 captains in uniform); winner may take a first-half option or defer; teams change goals after the 1st and 3rd periods.
• Ending a period: if time expires during a down, play it out. The period is extended by an untimed down for an accepted penalty, a double foul, an inadvertent whistle, or a touchdown needing a try — but not for unsportsmanlike or nonplayer fouls, loss-of-down fouls, fouls enforced on the kickoff, or fouls whose enforcement is a safety.
• Time-outs: three charged per team per half (1 minute; unused ones do not carry over, and second-half time-outs do not carry into overtime). Requests after they are gone are granted only for injury, equipment repair or a rules review. A coach-referee conference to review a possible misapplication stays charged unless the ruling changes.
• Official's time-outs include measurements, first downs, change of possession, injury, concussion signs (player out until cleared by a health-care professional), blood/open wound, helmet coming completely off, and missing or improperly worn equipment — each of those last four replaces the player for at least one down.
• Play clock: 40 seconds normally, starting when the ball is declared dead; 25 seconds on the ready-for-play after a score/try, to start a period, after a charged or official's time-out, after an inadvertent whistle, and after a legal kick that awards a new series.
• Clock stops on: foul, official's/charged time-out, end of period, out of bounds, incomplete pass, score or touchback, fair catch, inadvertent whistle, airborne receiver carried out of bounds. Inside the last 2 minutes of a half, the offended team may choose to start the clock on the snap. The referee may fix obvious game-clock errors before the second live ball, and play-clock errors before the snap.
• Substitutions: replaced players begin leaving within 3 seconds and exit on their own team-box side; no in-and-out during the same dead-ball interval; entering subs must be on their own side of the neutral zone at the snap. Illegal substitution is 5 yards — dead-ball, live-ball or nonplayer depending on which article was broken; participating is illegal participation (15).
• Delay of game (5 yards) covers the play clock expiring, snapping before the ready, carrying the ball away, failing to unpile, and other stalling. Failing to play within 2 minutes of the referee's order is a forfeit.

Rule 4 — Ball in Play, Dead Ball and Out of Bounds

• Kickoff starts each half and follows a field goal or try; free kick also follows a safety, a replayed free-kick down, and a fair catch/awarded fair catch. Snaps and free kicks are made between the hash marks.
• Ball becomes dead when: the runner is down, out of bounds or his progress is stopped; a pass is incomplete; a kick breaks R's goal-line plane or a scoring attempt fails; opponents catch/recover simultaneously; a loose ball is motionless and unattended; K catches or recovers (as specified); any score; the runner's helmet comes completely off; a prosthetic limb comes off. Place-kick holder exceptions keep the ball live when a knee-down holder handles the snap.
• Inadvertent whistle: during a kick or a pass/snap in flight → replay the down; during a loose ball → last team in possession chooses replay or the ball where possession was lost; in player possession → that team takes the dead-ball spot or a replay. An accepted live-ball penalty from before the whistle takes precedence.
• Out of bounds: the spot is where the ball's foremost point crossed the sideline; a pylon means out of bounds behind the goal line. New for 2025: a forward fumble out of bounds between the goal lines returns to the spot of the fumble.

Rule 5 — Series of Downs and Down After Penalty

• Ball dead between the hash marks → play from there; dead in a side zone → the nearest hash mark (incomplete legal passes and inadvertent-whistle replays return to the previous spot). A may pick any spot between the hash marks for a try, kickoff, free kick after a safety, fair catch, touchback and overtime series.
• New series to A on or beyond the line to gain; to B whenever B has the ball at the end of a down or A is short after fourth down; to the team in possession after a change of possession; to R on kicks per 5-1-3e–g. Each first down restarts the count; no series ever starts on a down other than first.
• Line to gain is set after all fouls before the ready-for-play are enforced, then stays fixed for the series. Measurements are parallel to the sideline; the referee may deny an obvious one.
• After a penalty, the ball belongs to the team in possession at the time of the foul unless it was a PSK foul or kick-catching interference. Loss of down is meaningless after a change of possession or if the line to gain is reached.

Rule 6 — Kicking the Ball and Fair Catch

• Free-kick lines are always 10 yards apart: K's 40 for a kickoff, its 20 after a safety, the yard line of the catch after a fair catch. Only the kicker and holder may be beyond the line; no other K player more than 5 yards behind it; at least four K players on each side of the kicker; a punt may be used only after a safety; pop-up kicks are illegal (5 yards).
• First touching by K before the ball crosses R's free-kick line (or, on a scrimmage kick, beyond the expanded neutral zone) lets R take the ball at that spot — a right that is cancelled if R then fouls or if any penalty from the down is accepted. First touching is always ignored when a penalty is accepted.
• K may recover a free kick once it has both touched the ground and gone beyond R's free-kick line (either order), or after any legal R touch. A recovered kick is dead — K may never advance a free kick.
• Scrimmage kicks may be kicked only from in or behind the neutral zone before a change of possession. Beyond the neutral zone, only R may advance. Touching of a low kick in or behind the expanded neutral zone is ignored.
• Free kick out of bounds untouched by R (5 yards): R may take a re-kick 5 yards back, 5 yards from the succeeding spot, or the ball 25 yards beyond the previous spot when that spot is on the midfield side of R's 25.
• Fair catch: a valid signal is a full-arm lateral wave above the head. Only the signaler is protected; a catch by a teammate still kills the ball. After any valid or invalid signal, no receiver may advance. Signaling forfeits blocking until the kick ends (15 yards).
• Kick-catching interference (15 yards): K may not touch the ball or R, or obstruct R's path, while a kickable kick is in flight — even with no signal given. R chooses the result of the play, an awarded fair catch after a 15-yard penalty from the spot of the foul, or 15 yards from the previous spot and a replay. K may catch or bat a scrimmage kick in flight beyond the neutral zone when no R player is in position to catch it.
• Touchback on any non-scoring kick breaking R's goal-line plane, or a failed three-point attempt; ball at the 20.

Rule 7 — Snapping, Handling and Passing the Ball

• Snap: quick, continuous, backward, immediately leaving the snapper's hands and touching a back or the ground before an A lineman. After touching the ball the snapper may not remove both hands, simulate a snap, or fail to pause. An illegal snap leaves the ball dead (5).
• Encroachment (5): after the ready-for-play, breaking the neutral-zone plane, contacting the ball before the snap ends, or contacting the snapper's hands/arms. False start (5): shift or feigned charge simulating the snap, an act intended to draw B in, or a hand movement by an interior lineman. A false start that draws B in penalizes only the false start. Disconcerting acts by B: 5 yards.
• Formation: every A player and substitute must have been momentarily between the 9-yard marks; at least five A players on the line numbered 50–79; at most four backs; only one player may break the waist plane of his nearest lineman. Scrimmage-kick-formation exceptions let a 0–49/80–99 snapper play (four 50–79 linemen required, and that player is an ineligible receiver). After a shift or huddle, all 11 stop for at least one full second; only one player may be in motion at the snap and never toward the opponent's goal (5 yards each).
• Handing: backward any time; forward only before a change of possession, from in or behind the neutral zone, and only to a back or to a lineman who has half-turned and is 1 yard behind the line (5 + loss of down).
• Forward pass: one per down, thrown with both feet in or behind the neutral zone, before a change of possession. Illegal passes: after a change of possession (5), from beyond the neutral zone or a second pass (5 + loss of down), intentional grounding (5 + loss of down) — with the two spike/throwaway exceptions (immediately after a clean snap by the player behind the snapper; and the passer outside the free-blocking-zone boundary throwing to or past the neutral zone).
• Eligibility: A players on the ends of the line or legally behind it and numbered 0–49/80–99 (up to six), all B players, and all A players once B touches the pass. Eligible at the start of the down = eligible all down.
• Pass interference (15) exists only beyond the neutral zone, on a legal pass that crosses it untouched by B; restrictions start at the snap for A and at the release for B and end when the pass is touched or incomplete. Not interference on simultaneous bona-fide attempts, immediate contact by A on a B lineman that stops at the expanded neutral zone, or B contact away from the pass.
• Ineligible downfield 5 yards (previous spot); illegal touching by an ineligible 5 + loss of down (basic spot).

Rule 8 — Scoring Plays and Touchbacks

• Possession of a live ball in the opponent's end zone is always a touchdown.
• Try from any spot between the hash marks on B's 3-yard line — untimed, unnumbered. 2 points for a touchdown, 1 for a field goal or safety; only A may score. Skipped after a last-play touchdown that cannot affect the outcome or playoff qualifying. The opponent of the scoring team chooses who kicks off.
• Fouls by the opponent during or after a scoring play (and unsportsmanlike or nonplayer fouls by either team) may be enforced on the try or on the subsequent kickoff — the scoring team's choice. A loss-of-down foul by A during a successful try wipes out the score with no replay.
• Field goal: place kick or drop kick from scrimmage or after a fair catch; must clear the crossbar between the uprights without touching the ground or a K player beyond the expanded neutral zone. A kickoff or free kick after a safety can never score a field goal.
• Safety when a runner takes the ball from the field of play into his own end zone and it dies in his team's possession, when a player forces a loose ball across his own goal line, or when a penalty against A is enforced from its end zone. Momentum exception: an interception/recovery/kick catch between the 5-yard line and the goal line whose momentum carries the player into the end zone belongs to his team at the spot of the catch — now including a fumble that goes from the end zone into the field of play and out of bounds.
• Touchback: kicks breaking R's goal-line plane, failed three-point attempts, a pass intercepted and dead in B's end zone, and the force-based cases in 8-5-3. Ball in play at the 20 (snap after a touchback, free kick after a safety).

Rule 9 — Conduct of Players and Others

• 5 yards: helping the runner (push/pull/lift).
• 10 yards: illegal blocking technique, interlocked blocking, holding, illegal use of hands, runner grasping a teammate, block in the back, illegal block on a free kick (K may not block until the kick has gone 10 yards, K is eligible to recover, or R blocks first inside the neutral zone), illegal kicking or batting.
• 15 yards: blocking below the waist outside the free-blocking zone, blocking after a fair-catch signal, blocking the free kicker or holder, clipping, chop block, and the personal fouls of 9-4-3 — swinging a foot/knee, charging into a player out of the play or after the ball is dead, piling on, hurdling, face-mask twist (incidental grasp is 5), illegal helmet contact, targeting, horse-collar (enforced as a live-ball foul), illegal blindside block, tripping, striking/kicking/kneeing (also disqualification), contact with a helmet-less opponent, and forceful contact against a defenseless receiver (9-4-3p) unless it is incidental while playing the ball, initiated with open hands, or a wrap-up tackle attempt.
• Automatic first down: roughing the passer, roughing the kicker or holder, roughing the snapper (15 yards; running into the kicker without displacement is only 5). Simply running into ≠ roughing.
• Unsportsmanlike conduct (15): baiting/taunting, profanity or vulgar gestures, prolonged self-focused acts, kicking at the ball, spiking or throwing the ball after it is dead, refusing an official's request, tobacco/alcohol/impairment from arrival until departure. A second unsportsmanlike foul = disqualification; flagrant acts are immediate disqualification.
• Illegal participation (15, basic spot): leaving the field and returning, 12+ players participating, deceptive substitutions, a player lying down to deceive, a disqualified player returning, or continuing to play after the helmet comes off.
• Nonplayers/coaches (9-8): unsportsmanlike acts, arguing calls, unauthorized conferences, illegal communication equipment, being outside the team box, not being ready to start a half, allowing illegal equipment — 15 yards, several charged to the head coach. Sideline interference escalates: warning → 5 yards → 15 yards. A substitute leaving the box during a fight is 15 + disqualification. A disqualified coach must leave the stadium area with no further team contact.
• Unfair acts (9-9): the referee may impose any equitable penalty including awarding a score; repeated half-the-distance fouls can forfeit the game.

Rule 10 — Enforcement of Penalties

• Penalties are 5, 10 or 15 yards, always declinable, and never more than half the distance to the offender's goal line. Choices are final once made and must be made before any charged time-out.

• Order of enforcement: a live-ball foul followed by a dead-ball foul by the opponent is penalized separately, in order. Multiple live-ball fouls by one team → the offended team picks one. Equal numbers of 15-yard unsportsmanlike/ nonplayer/dead-ball personal fouls by both teams offset; the remainder are enforced in order.

• Double foul → penalties cancel, replay the down. But if possession changed and the team that ended up with the ball fouled only after the change, it may keep the ball by declining its opponent's penalty (same idea for R when all of R's fouls are PSK fouls).

• Basic spots — the heart of the chapter:

  Situation	Basic spot
  Foul simultaneous with the snap/free kick	Previous spot
  Foul behind the line during a loose-ball play	Previous spot
  Run/related run ends behind the line, no change of possession	Previous spot
  Foul by A behind the line, run ends beyond the line (or vice versa)	Previous spot
  Foul by B when the run ends beyond the line	End of the run
  Foul by A beyond the line, behind the end of the run	Spot of the foul
  Foul beyond the end of the run after a change of possession	End of the run
  R's post-scrimmage kick foul	Where the kick ended (PSK spot)
  Illegal batting/kicking, second-or-later forward pass, intentional grounding, A's foul in its own end zone	Spot of the foul
  Unsportsmanlike, nonplayer or dead-ball foul; touchback after a change of possession	Succeeding spot
  Force-into-the-end-zone cases of 10-4-7	The 20-yard line

• Special enforcement: free kick out of bounds, kick-catching interference, unfair acts, fouls on successful tries/field goals, fouls during or after a touchdown, roughing the passer/kicker/snapper, and K's fouls during a kick (offended team may choose succeeding-spot enforcement).

• An accepted penalty for a foul by A during a scoring play nullifies the score (unsportsmanlike/nonplayer fouls excepted). No penalty directly produces a safety, but enforcement from behind A's own goal line does.

4. Penalty cheat sheet

Condensed from the PENALTY SUMMARY; signal numbers are in that table.

* also loss of down (meaningless after a change of possession or if the line to gain is reached). † also an automatic first down.

Disqualification: fighting, intentionally contacting an official, striking/ kicking/kneeing, any flagrant foul, a second unsportsmanlike foul, or a substitute leaving the team box during a fight.

5. Fundamentals worth memorizing

Straight from FOOTBALL FUNDAMENTALS — the principles that resolve most arguments:

1. A live ball is always in some team's possession; no foul causes loss of the ball, and no live-ball foul makes the ball dead.
2. A player cannot fumble before gaining possession, and possession in the opponent's end zone is always a touchdown.
3. The whistle rarely kills the ball — it is already dead by rule. A dead ball becomes live only by a legal snap or free kick.
4. A kick ends the instant a player secures possession. Any kick that is not a scoring attempt is dead when it breaks R's goal-line plane.
5. After any valid or invalid fair-catch signal by any R player, no receiver may advance.
6. Only three defensive fouls give an automatic first down: roughing the kicker/holder, the passer, or the snapper.
7. Pass interference can only happen beyond the neutral zone. A player eligible at the start of the down stays eligible all down. A handed ball is not a pass.
8. A live-ball foul plus a later dead-ball foul is never a double foul; a foul during a try never pairs with a dead-ball foul either.
9. There can be several running plays in a down, each with its own basic spot, but only one loose-ball play.
10. Any distance penalty may be declined; all penalties are 5, 10 or 15 yards; each is enforced from the basic spot unless a rule says otherwise.

6. Overtime (state-adopted procedure)

From RESOLVING TIED GAMES — a model procedure each state may adopt, amend or reject.

• 3-minute intermission, coin toss, and officials review carry-over penalties.
• Each team gets one series, first and goal from the 10 (15 in six-player), from any spot between the hash marks, at the same end of the field.
• The line to gain is always the goal line. A field-goal attempt is allowed on any down. Each team gets one time-out per overtime period.
• The offensive series ends on any score or the moment the defense gains possession. A defensive safety or touchdown ends the game. An offensive safety puts the other team's series at the 10 (temporary 2–0).
• Ties repeat with 2-minute intermissions; the loser of the toss chooses first in the second period, then options alternate. PSK enforcement does not apply.
• The 17 interpretations (3.1.1 SITUATION A–Q) cover carry-over penalties, fouls after a score, and defensive possession ending a series.

7. Nine-, eight- and six-player differences

From NINE-, EIGHT- AND SIX-PLAYER RULES DIFFERENCES. Eleven-player rules apply except:

Conferences use the 7-yard marks in all three codes, and the 10-4-7 basic spot becomes the 15-yard line.

8. Where to look things up

Case plays that interpret these rules live in the companion 2025 NFHS Football Case Book.