Comm H S Dist 99 - South High Sch in Downers Grove, IL

At a glance

Reported students

2,591

NCES CCD 2024–25

Teachers (FTE)

176.27

NCES CCD 2024–25

Student–teacher ratio

14.7:1

Calculated; not a class-size measure

Grades served

09–12

NCES preliminary directory 2025–26

Illinois high enrollment

96th percentile

Compared with 965 same-level schools reporting enrollment.

District median enrollment

2,336.5

Comm H S Dist 99 - South High Sch: 2,591 reported students.

State peer staffing position

71st percentile

14.7:1 reported; state peer median 12.6:1. Ratio is not class size.

Historical enrollment and staffing · CRDC 2021–22

These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.

Students: 2,731
Teachers (FTE): 182.3
Student–teacher ratio: 15:1

What the reported data says about Comm H S Dist 99 - South High Sch

Comm H S Dist 99 - South High Sch is a public high school serving grades 09–12 in Downers Grove. It is one of 2 current school records connected to CHSD 99. NCES reports 2,591 students for 2024–25.

Among 965 high schools in Illinois with comparable records, this school is larger than the reported median of 254 students. Its enrollment is at approximately the 96th percentile for that peer group. Size describes the campus, not instructional quality.

The reported student–teacher ratio is 14.7:1, above the Illinois median of 12.6:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.

The largest reported race and ethnicity groups are White (54.1%) and Hispanic or Latino (22.9%). English learners represent 5.4% of enrollment. Students served under IDEA represent 15.7%. These figures help families understand who the school serves; they are not rating inputs.

The 2021–22 civil-rights collection reports AP student enrollment. The school reported 11 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.

Questions worth asking Comm H S Dist 99 - South High Sch

1How do the reported 14.7:1 student–teacher ratio and 176.27 teacher FTE translate into actual class sizes by grade?
2Have the reported academic programs changed since the 2021–22 CRDC collection?
3What counseling support is available today? The school reported 11 counselor FTE in 2021–22.
4What meal assistance, transportation, after-school, and family-support services are currently available?

Bring the full school visit checklist →

Enrollment needs

English learners: 5.4%
Students with disabilities: 15.7%
Lunch program: No

Reported support staff

Counselors (FTE): 11
Nurses (FTE): 1
Psychologists (FTE): 3
Social workers (FTE): 6

CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.

Student demographics

Race and ethnicity share of reported enrollment

White54.1%
Hispanic22.9%
Black11.2%
Asian7.2%
American Indian / Alaska Native0.1%
Native Hawaiian / Pacific Islander0.3%
Multiracial4.2%

Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.

Programs reported by the school

AP student enrollment

Students enrolled

11 distinct courses reported

Gifted and talented

Not reported as offered

Computer science

Not reported as offered

CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.

Start with campuses at the same school level or with similar reported enrollment.

Comm H S Dist 99 - North H S

High · Grades 09–12

2,082 reported students

View all 2 district schools →

Public schools near Comm H S Dist 99 - South High Sch

Closest campuses by straight-line distance between NCES geocodes, favoring the same school level. Distance is not drive time or an attendance assignment.

School	Grades	Students	Distance
Comm H S Dist 99 - North H S High · CHSD 99	09–12	2,082	2.4 mi
Hinsdale Twp HSD 86 Adult Opportunities Program High · Hinsdale Twp HSD 86	12–12	0	3.5 mi
Lisle High School High · Lisle CUSD 202	09–12	447	3.6 mi
Hinsdale South High School High · Hinsdale Twp HSD 86	09–12	1,370	3.7 mi
Westmont High School High · CUSD 201	09–12	395	4.4 mi
Hinsdale Central High School High · Hinsdale Twp HSD 86	09–12	2,445	4.6 mi

Compare all 17 public schools in Downers Grove, IL →

Frequently asked questions about Comm H S Dist 99 - South High Sch

What grades does Comm H S Dist 99 - South High Sch serve?

Comm H S Dist 99 - South High Sch reports grades 09–12 in the NCES 2025–26 preliminary directory. It is classified as a high school in CHSD 99.

How many students attend Comm H S Dist 99 - South High Sch?

Comm H S Dist 99 - South High Sch reported 2,591 students in the NCES 2024–25 membership file. That places it near the 96th percentile among 965 Illinois high schools reporting enrollment. The 2021–22 civil-rights collection recorded 2,731 students.

What is the student–teacher ratio at Comm H S Dist 99 - South High Sch?

The calculated ratio is 14.7:1, based on 2,591 students and 176.27 full-time-equivalent classroom teachers in 2024–25. The Illinois median for the same school level is 12.6:1. A ratio is not the same as average class size.

Is Comm H S Dist 99 - South High Sch a public, charter, or magnet school?

Comm H S Dist 99 - South High Sch is a public school and is not a charter school. Enrollment is generally based on CHSD 99 attendance boundaries and transfer rules.

Which school district is Comm H S Dist 99 - South High Sch in?

Comm H S Dist 99 - South High Sch is part of CHSD 99, based in Downers Grove, IL, which operates 2 current schools. Confirm attendance zones and enrollment rules with the district.

What public schools are near Comm H S Dist 99 - South High Sch?

The closest public schools by straight-line distance include Comm H S Dist 99 - North H S (2.4 mi), Hinsdale Twp HSD 86 Adult Opportunities Program (3.5 mi), Lisle High School (3.6 mi). Distance does not determine eligibility; attendance boundaries and program rules do.