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 over 5,300 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.


Downers Grove North High School

  • Year opened: 1928
  • Mascot: Trojan

Downers Grove South High School

  • Year opened: 1964
  • Mascot: Mustang


  • 5,055 students
  • 67% white, 33% minority
  • Attendance rate: 96%
  • Graduation rate: 92%
  • Average class size: 20
  • 324 certified teachers, averaging 13.5 years of experience
  • 83.2% of teachers have a master’s degree or higher
Academic programs and achievement
  • 22.8 ACT composite score average, exceeding the national average
  • For juniors taking the Prairie State Achievement Test (PSAE), 75.1% of met or exceeded standards in math and 67.4% met or exceeded standards in reading
  • 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: $10,274
  • Average teacher salary: $89,652
  • 90% of revenue from local property taxes and other local funding
  • Higher than state average expenditure on instruction (50.5%); lower than state average expenditure on administration (1.3%)
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