Kingwood High School opened in the fall of 1979, under Principal Andy Wells. A 9th grade campus at 4015 Woodland Hills Drive opened in 1993. Prior to 1996 both campuses were in the Kingwood
census-designated place in an
unincorporated area in
Harris County. Since then, the school has undergone numerous additions and renovations, including a three-year project, with a cost of $50 million, which began in 2006, and completed December 2008. Prior to fall 2007, as 9th graders attended the separate campus, combined enrollment was over 4,000, making Kingwood High School the 7th largest Texas public high school by enrollment at the time. The former 9th grade campus was renovated and is now an independent high school, called
Kingwood Park High School. The first four-year class back on the main campus entered in fall 2008, and graduated in the spring of 2012. Just before the beginning of the 2017-2018 school year, Kingwood High School was badly damaged by flooding caused by
Hurricane Harvey. This meant that the students that year took their classes at
Summer Creek High School. The school reopened in March 2018 after having repairs worth upwards of $70 million. ==Academics==