Sealy High School (SHS) is a public high school located in the city of Sealy, Texas and classified as a 4A school by the University Interscholastic League.

It is a part of the Sealy Independent School District located in southern Austin County.

During 2022–2023, Sealy High School had an enrollment of 903 students and a student to teacher ratio of 13.85.

In 2005 SHS struggled with unacceptable scores on the Texas Assessment of Knowledge and Skills (TAKS) test.

However, it regained its acceptable state rankings in 2006 testing.