Assistant Coach Instructing Players

[Nu1]

The official in this situation could be wrong and right. His statement about it being a rule in the high school rule book would count towards the "wrong" side. However, as someone else mentioned, these leagues often have their own rule adaptations.

For example, in the local 5th and 6th grade league there is no coaching box. The head coach cannot stand at all. Even though this is not how it is done in the high school games. So, it's possible your league has a rule about assistant coaches. You should look into a copy of league rules in addition to just having an NFHS rule book.

Also, in my area, many seasoned, veteran, varsity men and women work these traveling league games. It is by no means just new, green officials.