3pointer9 wroteFairly new official. Youth basketball (3rd through 8 grade) girls. We use NCAA with some modifications. So, I am not sure where tjones is referring to.
Tjones is referring to the NFHS (National Federation of High School) rule book (which is the rule set used by the overwhelming majority of leagues in the US, high school and below). Specifically, he's referring to Rule 2, Section 11, Article 11, Note 2:
2. The procedure if a player who has committed his/her fifth foul continues to play because the scorer has failed to notify the official is as follows: As soon as the scorer discovers the irregularity, the game horn should be sounded after, or as soon as, the ball is in control of the offending team or is dead. The disqualified player must be removed immediately. Any points which may have been scored while such player was illegally in the game are counted. If other aspects of the error are correctable, the procedure to be followed is included among the duties of the officials.