How many coaches have actually read the rule book from the NFHS, I mean Kansas Kid's adopted the rule book as their rules with a few modifications. It clearly states in the book what coaches misconduct is...

Rule 5, Section 5 "Coach Misconduct"
Art. 1 . . . Coach Misconduct occurs when a coach improperly questions the referee.
Art. 2 . . . When a coach requests a conference with the referee regarding a possible misapplication of a rule, and it is determined there was no misapplication or when, during a conference, the coach questions the judgment of the referee, coach misconduct shall be called. The coach misconduct penalty shall always be charged to the head coach.
Art. 3 . . . Coach misconduct results in the following:
a. First offense - warning;
b. Second offense - deduct one team point;
c. Third offense - deduct two team points and removal of the head coach for the remainder of the day. The penalty sequence starts anew each day. (See penalty chart)

"Improperly" is underlined as it is underlined in the rule book. I know it's everyone's favorite term, but "improperly" is also a judgment call as to if it was properly or not for the reason it was stopped, how the conference was asked for (or wasn't), or probably even the way (demeanor) it was asked could be construed differently.

Now for the kid's modification on ejections...
Rule 8 An official ejection will follow an official warning, except in the case of flagrant misconduct. Anyone officially ejected from a tournament must leave the building, and will not be allowed to participate in and/or attend any other sanctioned event or activity. This sanction shall be effective for:
1st occurrence – 8 days
2nd occurrence – 24 days
3rd occurrence – one calendar year from date of ejection