Question: what are the rules for high school volleyball?
Answer: 6 players on the floor at any one time - 3 in the front row and 3 in the back row.
Maximum of 3 hits per side.
Points are made on every serve for wining team of rally (rally-point scoring).
Player may not hit the ball twice in succession. ... 
Ball may be played off the net during a volley and on a serve.