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Click here to view complete rules:  2017 CYLA OFFICIAL PLAYING RULES

Youth coaches should be familiar with NFHS Boys High School Lacrosse Rules, which are the basis of Colorado high school lacrosse rules.

NFHS Rules: http://www.nfhs.com/c-198-boys-lacrosse.aspx

2017 US Lacrosse Rules: https://www.uslacrosse.org/sites/default/files/public/documents/rules/2017-boys-youth-rules.pdf



The CYLA abides by NFHS (National Federation of High Schools) rules as amended by US Lacrosse and the CYLA.   It updates rules on an annual basis to insure safe and fair play for all.  

In general, the NFHS and US Lacrosse have worked together closely to align youth and high school rules to improve the consistency of officiating at both levels.  However, officials and coaches are reminded that:

“At the youth level, US Lacrosse expects stricter enforcement of the Cross Check, Illegal Body Check, Checks Involving The Head/Neck, Slashing, Unnecessary Roughness, and Unsportsmanlike Conduct rules than is common at the high school level.”  (US Lacrosse Rule 5)


Please note the following rule changes or modifications for 2017 CYLA Lacrosse:

IMPORTANT NFHS RULES CHANGES FOR 2017:  The NFHS (National Federation of State High School Associations) Boys Lacrosse Rules Book provides the foundation for the US Lacrosse and CYLA rulebooks.   The following NFHS rule changes for 2017 will apply to all CYLA divisions.

  • 6-5-2: Failure to wear the required mouthpiece (unless it comes out during play) is now a technical foul.  Previously, this was a personal foul.  This change has been instituted to encourage increased enforcement by officials.
  • 4-18-4: No defensive player, other than a properly equipped goalkeeper, can enter his own crease with the perceived intent on blocking a shot or acting as a goalie.  Penalty: Conduct foul on the defensive player.  A second violation by the player will be enforced as releasable unsportsmanlike conduct.
  • 6-10-3: During the last two minutes of regulation play, stalling rules are in effect for the team that is ahead by four goals or less.  When the score differential is five goals or more, neither team is forced to keep the ball in the goal area unless warned to “keep it in.”
  • 4-3-1 Exception 2: If a player or team commits a foul before any faceoff, the ball will be awarded to the offended team in its offensive side of the field at the Center.


IMPORTANT US LACROSSE RULES CHANGES FOR 2017:  The following US Lacrosse rule changes for 2017 will apply to all CYLA divisions.

  • 1-9-1j:  Arm pads are now optional equipment for goalies (consistent with previous CYLA rule).
  • 1-10h:  Eye black and eye black strips are allowable as long as they do not contain offensive words, shapes, images, or logos. 
  • 5-11-1:  Any player who accumulates 3 personal fouls or 5 minutes in personal foul penalty time shall be disqualified from the game. (Previously, disqualification occurred after 4 personal fouls.  Disqualification does not result in suspension from the player’s next game).