In 2005 SHS struggled with unacceptable scores on the Texas Assessment of Knowledge and Skills (TAKS) test. However, they regained their acceptablility in 2006 testing.
SHS's athletic teams include: basketball, baseball, cheerleading, cross country, football, golf, powerlifting, softball, soccer, tennis, track and volleyball. Their mascot is the "Tiger." Sealy is probably most recognized for its football team, who, in 1997, became the first UIL 11-man football team in any classification to win four consecutive state championships.