It is located on a campus covering 34 acres (14 ha) in the northern section of Edison, in Middlesex County, in the U.S. state of New Jersey.

[citation needed] St. Thomas Aquinas High School is overseen by the New Jersey Department of Education and is accredited by AdvancED.

[11] Subjects required for graduation are as follows: St. Thomas Aquinas High School offers courses at the College Prep, Accelerated, Honors, and Advanced Placement levels.

[12] The St. Thomas Aquinas High School Trojans[3] compete in the Greater Middlesex Conference, which is comprised of public and private high schools in the Middlesex County area and operates under the supervision of the New Jersey State Interscholastic Athletic Association.

[13] Sports offered for men include: baseball, basketball, bowling, cross country, football, golf, lacrosse, soccer, swimming, tennis, wrestling, and winter and spring track.

Women's sports include: basketball, bowling, cheerleading, cross country, golf, gymnastics, lacrosse, soccer, softball, swimming, tennis, volleyball, and winter and spring track.

[17] The 1984 team won the Parochial A South state sectional title with a 17–0 victory against Holy Cross Academy in the championship game.

[28][29] The varsity cheerleading team won the National Championship and best overall Grand Champion in Myrtle Beach, S.C. on March 11, 2017.

Fall opportunities include the “Shakespeare and the Classics” program which begins rehearsals In late summer to produce a play in mid-September.