The 1,100 students at TPHS come from sections of the villages of Tinley Park, Oak Forest, Markham, and Country Club Hills, Illinois.

With approximately 67 teachers for the estimated 1100 student body, Tinley Park has a student/teacher ratio of roughly 17:1.

[5] As of 2008, Tinley Park HS is making Adequate Yearly Progress (AYP) as described by the federal No Child Left Behind act.

[5] Tinley Park's athletic teams play in the South Suburban Conference, governed by the Illinois High School Association (IHSA).

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