Heading the list of revisions is:

Rule 2-1-1, which states that :a team must begin the game with at least 10 players, or it must forfeit.

    "We want to focus on minimizing risk in this situation," said Ron Belinko, chair of the NFHS Boys Lacrosse Rules Committee. "The change was also made with consideration to uniformity with other NFHS rules codes."

Rule 1-6-1 was also revised. 
It states that there must be one crosse with a measurement of 10 to 12 inches inside at its widest point at the bottom and top of the wall, and this crosse shall be used by the required designated goalkeeper. This rules revision was enacted to clarify that a properly equipped goalkeeper must be on the field at all times.

Rule 1-9-1g, which emphasizes that the jersey must completely cover the shoulder pads, making it easier for the officials to call the game and prevent potential injuries.

Rule 1-9-1l indicates that all players on the same team must wear uniform shorts of the same dominant color.
Previously this was not addressed, although the color of compression shorts was specified.

Rule 6-5-2u addresses uniform violations. If a team cannot correct a uniform violation prior to the start of a contest, a technical foul is assessed, and the ball will be awarded to the opposing team at the start of the game.

    "Once the game begins, the uniform violations will not be penalized, as this differentiates them from illegal equipment violations and takes care of the problem prior to the beginning of the game," said Kent Summers, NFHS assistant director and liaison to the Boys Lacrosse Rules Committee.

Rule 1-6-2 clarifies that a ball stop is not required when playing.

Rule 4-6-3a states that the ball is considered out of bounds when the ball crosses the plane of the endline or sideline.

Rule 4-6-3c then explains that when a loose ball goes out of bounds as a result of a shot or deflected shot at the goal, it shall be awarded to the team with an inbounds player's body nearest to the ball when it went out of bounds, at the point where it was declared out of bounds. In this rule, the stick is not considered part of a player's body and now clarifies that the stick has no part in the determination of who is closest to the ball.

Rule 6-10-2a, clears up confusion by saying that the offensive stalling warning, other than in the last two minutes, remains in effect until a goal is scored or the defensive team takes possession.