At a glance
Reported students
447
NCES CCD 2024–25
Teachers (FTE)
40.02
NCES CCD 2024–25
Student–teacher ratio
11.2:1
Calculated; not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
Illinois high enrollment
64th percentile
Compared with 965 same-level schools reporting enrollment.
District median enrollment
447
Lisle High School: 447 reported students.
State peer staffing position
39th percentile
11.2:1 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
- 433
- Teachers (FTE)
- 38
- Student–teacher ratio
- 11.4:1
What the reported data says about Lisle High School
Lisle High School is a public high school serving grades 09–12 in Lisle. It is one of 3 current school records connected to Lisle CUSD 202. NCES reports 447 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 64th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 11.2:1, below 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 (54.4%) and Hispanic or Latino (22.8%). English learners represent 4.4% of enrollment. Students served under IDEA represent 18.7%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports AP student enrollment, computer science. The school reported 9 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Questions worth asking Lisle High School
- 1How do the reported 11.2:1 student–teacher ratio and 40.02 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 2 counselor FTE in 2021–22.
- 4What meal assistance, transportation, after-school, and family-support services are currently available?
Enrollment needs
- English learners
- 4.4%
- Students with disabilities
- 18.7%
- Free/reduced-price lunch
- 35.1%
- Lunch program
- Yes participating without using any Provision or the CEO
Reported support staff
- Counselors (FTE)
- 2
- Nurses (FTE)
- 1
- Psychologists (FTE)
- 1
- Social workers (FTE)
- 1
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
Student demographics
Race and ethnicity share of reported enrollment
- White54.4%
- Hispanic22.8%
- Black9.8%
- Asian5.6%
- American Indian / Alaska Native0%
- Native Hawaiian / Pacific Islander0.2%
- Multiracial6.9%
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
9 distinct courses reported
Gifted and talented
Not reported as offered
Computer science
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.
Other schools in Lisle CUSD 202
Start with campuses at the same school level or with similar reported enrollment.
Lisle Jr High School
Middle · Grades 06–08
338 reported students
Lisle Elementary School
Elementary · Grades PK–05
777 reported students