I've had this problem come up every year in JOV, under USAV (U14), you get one re-serve attempt per rally. At the completion of that rally, you have another serve attempt and thus a new re-serve attempt is allowed. It's not one re-serve during your term of service rotation.
In USAV a toss is part of your serve attempt and allowing the ball to drop (not within court), is not a delay...
Even had my regional ref go and correct someone on that during a tournament.
NFHS does differ from USAV...the folks with NFHS knowledge will see to that.
