- Level
- A little practice
- Time
- ~2 hours per game (arrive 30 min early)
- Shot clock
- 35 seconds
- Reset to full
- New possession, or shot hits rim & same team keeps it
- Your horn
- Distinct from the game-clock buzzer
- What stops play
- The official's whistle, not your horn
Quick start
- 1
Post the score as it's called
The official scorer beside you announces each basket. You add two or three to the board and keep the team-foul lights current so the bonus shows at the right time.
- 2
Start a fresh 35 on every new possession
Any time the other team gains control of the ball, reset to a full 35 seconds. This single rule covers most of the game.
- 3
Reset on a shot that hits the rim
If a shot draws iron and the same team rebounds it, reset to 35 and let it run. An airball that hits nothing while the same team keeps it does not reset.
- 4
Sound the horn at zero — then wait
When the shot clock reads zero, hit your horn. But the play only stops if an official whistles, so keep your eyes on the floor and don't assume.
- 5
Read the official's hand signals
A tap on the top of the head means a shot-clock violation; a finger circling overhead means reset the clock. When in doubt, reset to 35.
Watch first
You run two things from one console: the scoreboard (score and team fouls) and, in leagues that use it, the 35-second shot clock. The shot clock has its own horn, and it deliberately sounds different from the game-clock buzzer so the officials can tell them apart.
The scoreboard half is easy — the official scorer feeds you every basket. The shot clock is the part people worry about, but it's mostly one rule applied over and over.
- 1
New possession → full 35
The instant the other team gains clear control of the ball, reset the shot clock to 35 seconds.
- 2
Shot hits the rim, same team keeps it → full 35
If a try touches the ring and the shooting team rebounds, reset to 35 and let it run.
- 3
Ball stays with the same team, no rim → keep running
On a steal-back, a tap-out the offense recovers, or similar where the same team retains it without a rim touch, do not reset — let the clock continue.
- 4
Shot clock reads zero → sound the horn
Hit your distinct horn. Then watch — play stops only if an official whistles the violation.
- 5
Official signals reset → put 35 back up
A finger circling overhead means reset. When you're unsure whether it's a reset, default to a full 35 and let the official correct you.
- Shot clock length
- 35 seconds (high school, where the state has adopted it)
- Reset trigger
- Change of possession, or rim touch with same team retaining
- Violation signal
- Official taps top of head
- Reset signal
- Official circles finger overhead
- Horn rule
- Sounds at 0:00; does not stop play on its own
- Scoreboard powered on and showing 0-0 with the correct period
- Team-foul counters set to zero
- Shot-clock horn tested and confirmed distinct from the game buzzer
- Pre-game check with officials: shot clock in use, yes or no?
- You can see both the floor and the lead official's signals from your seat
- Reset and game-clock controls clearly identified before tip-off
More resources
Sources: NFHS Basketball Shot Clock State Association Adoption Guidelines (35-second clock); NFHS Basketball Officials Signal Chart; NFHS Basketball Rules (Rule 5 Scoring and Timing)