ART. 1 . . . A substitute who desires to enter must report to the scorer, giving his/her number.
a. Between quarters, at halftime and during a time-out, the substitute must report or be in position to report to the scorer, prior to the warning signal which is sounded 15 seconds before the end of the intermission or the time-out.
b. Substitutions between halves may be made by the substitute or a team representative.
c. During multiple free throws resulting from personal fouls, substitutions may be made only before the final attempt in the sequence and after the final attempt has been scored.
d. If entry is at any time other than between quarters, and a substitute who is entitled and ready to enter reports to the scorer, the scorer must use a sounding device or game horn, if, or as soon as, the ball is dead and the clock is stopped.
e. A captain may request a defensive match-up if three or more substitutes from the same team enter during an opportunity to substitute.
ART. 2 . . . The substitute must remain outside the boundary until an official beckons, whereupon he/she must enter immediately. If the ball is about to become live, the beckoning signal should be withheld. The entering substitute must not replace a designated jumper or a free thrower except as in 8-2 and 8-3. If the substitute enters to replace a player who must jump or attempt a free throw, he/she must withdraw until the next opportunity to substitute.
ART. 3 . . . A substitute becomes a player when he/she legally enters the court. If entry is not legal, the substitute becomes a player when the ball becomes live. A player becomes bench personnel after his/her substitute becomes a player or after notification of the coach following his/her disqualification.
ART. 4 . . . A player who has been replaced, or directed to leave the game must not re-enter before the next opportunity to substitute after the clock has been started properly following his/her replacement.
ART. 5. . . A player not wearing the pants/skirt properly and above the hips and/or a player not tucking in a team jersey (front and back) designed to be worn inside the pants/skirt, must be directed to leave the game as in 3-3-4; a charged time-out must not alter this requirement.
ART. 6 . . . A player who has been injured to the extent that the coach or any other bench personnel is beckoned and comes onto the court must be – directed to leave the game, unless a time-out is requested by, and granted to, his/her team and the situation can be corrected by the end of the timeout.
ART. 7 . . . A player who is bleeding, has an open wound, has any amount of blood on his/her uniform, or has blood on his/her person, must be directed to leave the game until the bleeding is stopped, the wound is covered, the uniform and/or body is appropriately cleaned, and/or the uniform is changed before returning to competition, unless a time-out is requested by, and granted to, his/her team and the situation can be corrected by the end of the time-out.
ART. 8 . . . Any player who exhibits signs, symptoms or behaviors consistent with a concussion (such as loss of consciousness, headache, dizziness, confusion, or balance problems) must be immediately removed from the game and must not return to play until cleared by an appropriate health care professional. (See NFHS Suggested Guidelines for Management of Concussion in Sports.)