1
What advice would you give to incoming students at Clifford Johnson School?
Community prompt from u/allk12. Replies below.
Enrollment
473
Elementary
DISTRICT 383 · STATE 381
SCHOOL COMMUNITY·CUSD 200·NCES 174218005526
Clifford Johnson School
2S700 Continental Dr, Warrenville, IL 60555 · (630) 393-1787 · DuPage County
GRADES KG–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL473 STUDENTS
A-
allk12 Grade
Scored higher than 79% of Illinois public elementary schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public elementary schools
Student : Teacher
11.0:1
43 FTE teachers
DISTRICT 12.9:1 · STATE 13.9:1
Free / Reduced Lunch
63%
298 students
DISTRICT 30% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 71 | 15% |
| Grade 1 | 84 | 18% |
| Grade 2 | 80 | 17% |
| Grade 3 | 86 | 18% |
| Grade 4 | 68 | 14% |
| Grade 5 | 84 | 18% |
This year's kindergarten class (71) is 15% smaller than its 5th grade class (84).
Student demographics
60%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 58% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)English Language Arts
61.9%
IL avg 51.0% . +15.0pp since 2023
Math
53.2%
IL avg 37.9% . +14.4pp since 2023
What this means: On the IAR + ISA, Illinois's statewide test, about 62 of every 100 students at this school read and write at grade level and about 53 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 15 points since 2023, while math scores are up about 14 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 61.9% | 53.2% |
| 2023-24 | 46.9% | 38.8% |
% Proficient (Levels 4-5), all students and all tested grades.
Source: IAR + ISA. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of IL schools after controlling for student poverty
Actual proficiency
51.0%
composite math + reading, all grades
Predicted
35.1%
based on IL schools with similar FRL share
Beats by
+15.9pp
above demographic expectation
What this means: About 51% of students here test proficient in math and reading, well above the roughly 35% typical for Illinois schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 16 points, placing it in Illinois's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Clifford Johnson School
Clifford Johnson School's state test result (51.0% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Clifford Johnson School this school | 473 | 63.0% | 51.0% |
| Luther Burbank Elementary School Burbank | 453 | 65.8% | 37.5% |
| Robert C Hill Elementary School Romeoville | 547 | 62.2% | 45.6% |
| Salt Creek Elementary School Elk Grove Village | 410 | 63.4% | 38.7% |
| North Elementary School Villa Park | 434 | 56.5% | 44.9% |
| Prussing Elementary School Chicago | 642 | 65.3% | 35.9% |
Matched among Illinois elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Clifford Johnson School ranks
Among elementary schools| Measure | This school | In Illinois | In DuPage County |
|---|---|---|---|
| State test proficiency ranked highest first | 51.0% | #569 of 1,925 | #71 of 112 |
| Math proficiency ranked highest first | 53.2% | #580 of 2,077 ▼ 18 | #93 of 141 ▲ 1 |
| Reading proficiency ranked highest first | 61.9% | #614 of 2,077 ▼ 34 | #88 of 141 ▼ 2 |
| Enrollment ranked largest first | 473 | #649 of 2,419 | #41 of 163 |
| Students per teacher ranked fewest first | 11.0:1 | #289 of 2,035 | #25 of 146 |
| Diversity index ranked most diverse first | 60.2% | #570 of 2,042 | #60 of 146 |
| Free and reduced lunch ranked highest share first | 63.0% | #916 of 2,132 | #16 of 123 |
| Enrollment change since 2017-18 ranked fastest growth first | +2.2% | #533 of 615 | #50 of 57 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
473
+38 (+9%) vs 2020
-21% since 1990-91, when it was 601
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 473 | 42.9 | 11.0:1 | 63% (298) |
| 2023-24 | 462 | 39.3 | 11.8:1 | 62% (288) |
| 2022-23 | 462 | 41.7 | 11.1:1 | 62% (286) |
| 2020-21 | 435 | N/A | N/A | N/A |
| 2017-18 | 463 | 35.2 | 13.2:1 | 65% (303) |
| 2015-16 | 468 | 37 | 12.7:1 | 73% (342) |
| 2010-11 | 512 | 37 | 13.8:1 | 62% (317) |
| 2000-01 | 590 | 40 | 14.8:1 | N/A |
| 1990-91 | 601 | 25 | 24.0:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Clifford Johnson School.
Since 2017-18: students up 2% (463 to 473); teachers up 22% (35.2 to 42.9).
About Clifford Johnson School
Clifford Johnson School is a mid-sized elementary school for students in Warrenville, Illinois. Enrollment totals 473 students across kindergarten through 5. That puts enrollment 24% bigger than the 381-student average for elementary schools in Illinois.
CUSD 200 has 20 schools and 11,639 students, and Clifford Johnson School is one of those schools.
Federal enrollment data show Clifford Johnson School is 55% Hispanic. Other groups make up 30% White, 6% Asian, 6% multiracial, and 4% Black. DuPage County as a whole is about 16% Hispanic, so the school's share is higher. A diversity index of 60% means there is a 60% chance two randomly chosen students at Clifford Johnson School are from different groups.
Its staff includes 42.9 full-time-equivalent teachers, for about 11.0 students per teacher. Across elementary schools in Illinois, the average ratio is 13.9:1. Clifford Johnson School has a free or reduced-price lunch rate of 63%. It compares with 34% for public schools in DuPage County.
Clifford Johnson School holds an A- allk12 Grade, placing it above 79% of Illinois public elementary schools.
Clifford Johnson School is 15.9 points above expectations on state tests, given its student poverty level, placing it in the top 10% in Illinois.
For the population of DuPage County, median household income comes to about $112,096, a bachelor's degree or higher is held by about 52% of adults, and the share of residents below the poverty line is 5%. DuPage County counts 277 public schools with about 138,557 students.
Illinois Youth Center-Warrenville is the nearest public school to Clifford Johnson School, about 1.2 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. On proficiency, Clifford Johnson School is ahead of the 49.1% nearby average, ranking 5th of 8.
NCES lists the school's locale as Suburb: Large. That means it sits in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment increased by 9% across 4 years, from 435 in 2020-21 to 473 in 2024-25.
Clifford Johnson School has a community page on allk12 for topics such as athletics, class schedules, and weather closures. Teachers and staff are welcome to share updates too.
DuPage County at a glance
View full county profilePopulation
930,024
Census ACS
Median income
$112,096
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
277
138,557 students
Quick facts
Related schools
Other schools in CUSD 200
- Wheaton Warrenville South High SchoolHigh · 1,864 students
- Wheaton North High SchoolHigh · 1,863 students
- Monroe Middle SchoolMiddle · 716 students
- Hubble Middle SchoolMiddle · 679 students
- Edison Middle SchoolMiddle · 635 students
- Pleasant Hill Elementary SchoolElementary · 583 students
Other schools in Warrenville
- Hubble Middle SchoolMiddle · 679 students
- Bower Elementary SchoolElementary · 406 students
Nearby schools
- Illinois Youth Center-Warrenville1.2 mi · 34
- Currier Elementary School2.1 mi · 359
- Bower Elementary School2.1 mi · 406
- Longwood Elementary School2.7 mi · 346
- Thayer J Hill Middle School2.7 mi · 828
- Brookdale Elementary School2.7 mi · 462
Frequently asked questions
About Clifford Johnson SchoolHow many students attend Clifford Johnson School?
Clifford Johnson School enrolls approximately 473 students in grades KG-05.
Is Clifford Johnson School an elementary, middle, or high school?
Clifford Johnson School is an elementary school covering grades KG-05.
What is the student-teacher ratio at Clifford Johnson School?
The student-to-teacher ratio at Clifford Johnson School is approximately 11.0:1 (43 FTE teachers).
How diverse is Clifford Johnson School?
Clifford Johnson School reports a student body of 30% White, 55% Hispanic, 4% Black, 6% Asian, 6% Two or more.
What district is Clifford Johnson School in?
Clifford Johnson School is part of CUSD 200.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.