Oxford Area High School (OAHS) is the only secondary school in the Oxford Area School District. It is located Oxford in Chester County, Pennsylvania, United States. The first high school in Oxford was established in 1869, but the current building was built in the 21st century, and was first open in the Fall semester of 2005. The student body consists of about 1200 students. The previous building, heavily renovated, is now the Penn's Grove Middle School.