Due to the expanding enrollment of Memorial High School the school district built Westchester High School in 1967. The school opened with an enrollment of one thousand eight hundred students. After seven years the school had increased to nearly four thousand students. The campus could not support the numbers, and as such Stratford High School was built in close proximity to Westchester, opening in 1974. Due to the oil bust in the early 1980s, the destruction of nearby apartment complexes, and many original home owners keeping their homes after their children had grown, enrollment in all SBISD high schools dropped dramatically. By 1985, the resulting decreases in enrollment forced the school board to close Westchester and relocate its former students to Memorial, Spring Woods and Stratford High Schools. Most Westchester students ended up attending Stratford High School, which for many years kept a permanent display case dedicated to Westchester memorabilia.
Westchester Academy for International Studies (1999–Present)
After this duration Spring Branch ISD made plans for the campus that resulted in a massive amount of construction and improvement on the pre-existing campus. In 1999 it reopened its doors as "Westchester Academy for International Studies". The school would eventually cap at one thousand students spanning across grades 6–12th. During the 2004–05 school year, the campus was shared with Stratford, due to renovations occurring on Stratford's campus. It is notable for being the only high school in Spring Branch ISD to offer the International Baccalaureate Diploma program at grades 11 and 12, an authorized Middle Years IB Program for grades 6–10, and has been recently authorized for the IB Career-related Programme. In 2014, Westchester was ranked in the top twenty-five high schools in Houston. In Summer 2016, Jennifer Collier stepped down as Director to take the vacant Spring Woods principal position. Kathy Menotti was named Interim Director, with Kristin Nash accepting the position as assistant director of the middle school. On October 3, 2016, Kathy Menotti stepped down as interim director, and was replaced by Dr. Pamela Butler, who was the school's first director.Dr. Valerie Muniz was chosen as the new permanent director of WAIS in May 2017. Kathy Menotti retired from her original position of Assistant Director of the Middle School in early 2017. Her replacement was chosen as Pamela Redd from Meadow Wood Elementary.
Campus
The campus of WAIS is divided into several wings. The A Wing houses the middle school, foreign language department, and technology classes. The B Wing houses the auditorium, theatre department, cafeteria, choir department, main office, and administration offices. The C Wing house the wood gym, dance rooms and health classrooms. The D Wing houses the rubber gym and storage areas. Lastly, the E Wing houses the upper school. The WAIS campus is also home to the Southwest Transition Campus for elementary schools that are being rebuilt. The classes are housed in temporary buildings on the north side of the campus.
The Altharetta Yeargin Art Museum is an art museum funded by the Spring Branch Independent School District. It is one of the only school districts in the nation that has an art museum. The museum is housed on the north side of the campus.
WAIS was named a 2011 National Blue Ribbon School. It is one of only 304 schools nationwide to be honored for overall "academic excellence" and for success in closing student achievement gaps. Only 10 schools in Texas were named Blue Ribbon Schools in 2011.
