High School Federation Three Point Mechanics

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A1 attempts a three point try from the corner,the lead official makes the three point signal.The lead official then referees the shooter A1 from the time the shooter attempts the three point try and until A1 returns to the floor (in case he or she is fouled) The three point try is successful and the lead official never raises both arms to indicate that the three point try was good. During the next dead ball the lead official explains to his partner that as the lead in a situation like this one he is not required to raise both arms to indicate that the three point try was successful. Is this the proper High School Federation Mechanic?