The school was expanded many times until, in 1958, when a second campus was built in Northlake, known as West Leyden.

Teams are stylized as the "Eagles", with the IHSA referring to the combined program as "Franklin Park-Northlake (Leyden)".

The school sponsors interscholastic sports teams for young men and women in: basketball, cross country, golf, gymnastics, soccer, swimming and diving, tennis, track and field, and volleyball.

While not sponsored by the IHSA, the Athletic Department also oversees a dance team for young women.

[8] The following teams have finished in the top four of their respective IHSA sponsored state championship tournament or meet:[9]