Radnor High School offers many AP and honors courses.

[4] 90% of former Radnor students go on to graduate from four-year colleges and universities.

[6] As of the 2021-2022 school year, the demographics of the student body were as follows:[8] Radnor offers a wide range of extracurricular and athletic activities with teams competing in the Central League.

Their many clubs for students include Model UN, Robotics, Hi-Q, and Future Business Leaders of America (FBLA).

[4][5] In 2012, The Daily Beast ranked Radnor as one of the top 500 public high schools in the nation.