Klein Oak High School was founded in 1982 by the Klein Independent School District under former district superintendent Dr. Donald Collins. The school's first principal was Robert West. The school received two grants from the state of Texas totaling over $816,000. Beginning in the early 2000s, Klein Oak became the first school in Klein ISD to participate in the one-to-one Tablet PC program, in which each student is issued a personal tablet laptop with which they use to both participate in class and do schoolwork. In 2012, the school was the seventh largest high school campus in the state of Texas, which prompted the expansion of the school for that school year. Using district bonds, an extra wing was added to the school to be used for freshman classes. In 2017, portions of the Klein Oak zone that were north of Texas State Highway 99 were rezoned to the newly-opened Klein Cain High School.
Academics
For the 1994-96 school years, Klein Oak High School was recognized with the Blue Ribbon SchoolAward of Excellence by the United States Department of Education, the highest award an American school can receive. The IB Diploma Programme has been offered at the school since February 2004. It is the only school in Klein ISD which offers the program. The Klein Oak graduating IB class of 2014 all received IB diplomas, becoming the first Klein Oak IB class to achieve a 100% pass rate. Klein Oak offers the Dual Credit and Advanced Placement programs, for those students wishing to go on to further education. Dual Credit is offered in Economics, English III, English IV, Government, World History, US History, and Business Information Management 2. For the 2018-2019 school year, the school received a B grade from the Texas Education Agency, with an overall score of 89 out of 100. The school received a B grade in two domains, School Progress and Closing the Gaps, and an A grade in Student Achievement. The school did not receive any of the seven possible distinction designations.
Feeder schools
s which send their students on to Klein Oak include the Bernshausen, Metzler, Northampton, Mueller, Benignus, Schultz, Frank and Hassler elementary schools. Intermediate schools sending their students to the school include the Ulrich, Hildebrandt, Krimmel and Doerre intermediate schools.
Demographics
The Klein Oak zone has the largest growth rate in Klein ISD, gaining nearly 300 students in one year. Enrollment during the 2003–04 school year dropped significantly when Klein Collins High School was opened and took nearly half of Klein Oak's enrollment. The school moved back up to 5A UIL status in the 2006–07 school year. The UIL unveiled a new categorization of 6A schools beginning in the 2014 school year, of which Klein Oak forms part. Klein Oak has historically had a predominantly white population higher than the district average. While the school also has a lower percentage of students who are economically disadvantaged, the school has a higher percentage of students who are considered at-risk than the district average, considering other academic risk factors, according to the Texas Tribune.
