In collaboration with the National Federation of State High School Associations (NFHS), US Lacrosse collaborate together on the rules for boys' lacrosse. US Lacrosse writes and publishes a stand-alone youth rule book for ages 14U and below. The rule sets in this book align with the principles of the Lacrosse Athlete Development Model (LADM), helping to ensure age-appropriate rules that allow athletes to progress and reach their maximum potential. US Lacrosse also publishes rule sets to govern box lacrosse.

High School Boys' Lacrosse

High School Rulebook Uniform Guidelines  Submit a Rule Change

Youth Boys' Lacrosse

Youth Rulebook Youth Rulebook - Digital Submit a Rule Change

Box Lacrosse

Box Rules - Digital

2020 Rules Changes

2020 NFHS Boys' Rules Interpretation Video

2020 US Lacrosse Youth Boys' Rules Interpretation Video

2020 Youth Boys' Rules Webinar

2020 NFHS Boys' Rules Webinar

2019 Rule Changes Examples

ART. 4 … A player shall not initiate a body check legally but slides up into or follows through to an opponent’s head or neck. PENALTY: Two- or three-minute, non-releasable foul, at the official’s discretion. An excessively violent violation of this rule may result in an ejection.

ART. 6 … A player shall not initiate Targeting: Intentionally taking aim at the head/neck of an opponent for the purpose of making violent contact. This could include a check with the crown of the helmet (spearing) that targets the head or neck of an opponent. PENALTY:  Three-minute, non-releasable foul. An excessively violent violation of this rule may result in an ejection.

ART. 7 . . . A player shall not initiate Targeting that intentionally takes aim at a player in a defenseless position. PENALTY:  Three-minute, non-releasable foul. An excessively violent violation of this rule may result in an ejection.

Penalty Explanations

Personal Fouls Playlist

Technical Fouls Playlist