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 is committed to providing a caring, challenging and inclusive 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
  • 4,894 students
  • 65.3% White, 15.4% Hispanic, 9% Black, 6.7% Asian, Two or More Races 3.3%, American Indian .2% 
  • Attendance rate: 94%
  • Graduation rate: 93%
  • Student-to-Teacher Ratio: 21.8:1
  • District 99 employs 713 full-time staff members:
    • 75% are teachers, principals, deans, counselors, psychologists, paraprofessionals, classroom support staff; 92% of our certified faculty members hold advanced degrees
    • 21% are other support staff, including campus security, technology support, office staff, custodial, maintenance and grounds personnel
    • 4% are administrative leaders, professionals and technical staff
Academic programs and achievement
  • Scholastic Aptitude Test (SAT) average is 1104.2, above state average of 1015.9
  • Strong focus on college preparedness by offering 27 Advanced Placement (AP) courses
  • 45% of students enrolled in at least one honors or AP course
  • 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: $10,894
  • 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