Ball hits ceiling over court.

NFHS rules. Haven't had this happen but came close at the end of regulation in a tied Boy's varsity game. A1 inbounding ball from baseline, trying to go length of the floor with 2.1 secs left. Throws baseball pass about 3/4 court where ball is tipped. Shot goes up misses and game goes to overtime. No big deal, except that the ball got within an inch or 2 of the ceiling and very easily could have hit the ceiling in flight.

My question is what is the ruling in the case where the ball hits the ceiling? My first feeling was that the ball is OOB and Team B gets ball for throw-in at spot of Team A's original Throw-in. But I got to thinking about that and started to second guess myself. Just looking for clarification and maybe a rules ref. Again NFHS rules.