About District 99

Community High School District 99's two award-winning high schools, North High School and South High School, serve a population of more than 65,000 residents and an enrollment of nearly 5,000 students from Downers Grove and Woodridge as well as Bolingbrook, Darien, Lisle, Oak Brook and Westmont. 

District 99's mission is to provide a caring and challenging environment where all students develop as lifelong learners, and its outstanding reputation is demonstrated in the results that it delivers.

D99 At A Glance

Downers Grove North High School

Year opened: 1928

Mascot: Trojan

North Logo

Downers Grove South High School

Year opened: 1964

Mascot: Mustang

South Logo
  • 4,880 students
  • 65% White, 35% Minority
  • Attendance rate: 95%
  • Graduation rate: 93.1%
  • Student-to-Teacher Ratio: 21.8:1
  • 407 certified teachers
Academic programs and achievement
  • 23.2 ACT composite score average, exceeding the national average
  • Strong focus on college preparedness by offering 27 Advanced Placement courses
  • Strong relationships with local business community, including a co-sponsored mentor program
  • After-school and summer programs available for at-risk students needing additional academic support
  • Instructional expenditure per pupil: $11,487
  • 90%+ of revenue from local property taxes and other local funding
Extracurricular opportunities
  • All-state athletic teams and champions in a variety of sports
  • All-state bands, orchestra and choirs
  • Variety of clubs encourage positive student involvement