Tualatin High School's roots reach back to 1865, when a small red schoolhouse was built in the village. The schoolhouse went on to become Tualatin Elementary School and is now the location of the Tualatin Food Bank. It was replaced in 1900 with a new, two-room school on Boones Ferry Road, which is still a major thoroughfare in the city. A four-year high school program was offered for the first time in 1909, after the school was hoisted up and two more rooms were added beneath. However, the seven-member class of 1936 was the last class to graduate from the old Tualatin School. After that, students were sent to nearby high schools in Sherwood and Tigard. The move was further solidified in 1969, when Tualatin residents voted to officially join Tigard School District 23J.