Competitive swimming and diving begin at the 9th grade level in SBISD. Each Senior High School has a coach employed to coach the Girl and Boy swim teams. In addition, the District employs a coach for all of the divers. For students not having transportation, a school bus brings all swimmers and divers from their campus to the Natatorium. If students wish, they may provide their own transportation or car pool.

In September, the High Schools begin their swimming and diving practices. These workouts are on a rotation basis, Mondays through Saturdays between 6:00 a.m. and 8:30 a.m. and/or between 1:30 p.m. and 5:30 p.m. on weekdays. Saturday practices are from 8:00 a.m. to 12:00 noon.

Beginning in November through March, about 25 High School Swim Meets are scheduled on Tuesdays, Thursdays, Fridays, and a few Saturdays. Warm-ups start at 5:30 p.m. and the meets begin at 6:30 p.m. on weekdays.

Each swim meet will have a referee, starter, stroke judge, turn judge, false start rope operator, a runner, a timer/scoreboard operator, a meet manager, computer operator, diving judges, 6 lane timers w/stopwatches and 6 backup button timers to work the meet. Most dual and tri-meets are over in about 2.5 hours, depending on the number of entries, speed of the swimmers, and any problems along the way.