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Parents: what's one thing you'd want the Williamsville High School administration to hear?
Community prompt from u/allk12. Replies below.
Enrollment
462
High
DISTRICT 486 · STATE 834
SCHOOL COMMUNITY·WILLIAMSVILLE CUSD 15·NCES 174248004271
Williamsville High School
900 S Walnut St, Williamsville, IL 62693 · (217) 566-3361 · Sangamon County
GRADES 09–12HIGH22-SUBURBREGULAR SCHOOL462 STUDENTS
A-
allk12 Grade
Scored higher than 77% of Illinois public high schools
- ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- BBeats 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 high schools
Student : Teacher
14.0:1
33 FTE teachers
DISTRICT 14.5:1 · STATE 13.8:1
Free / Reduced Lunch
18%
84 students
DISTRICT 16% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 95 | 21% |
| Grade 10 | 117 | 25% |
| Grade 11 | 127 | 27% |
| Grade 12 | 123 | 27% |
Student demographics
13%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 10% · 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
School pathway
Feeds from
Based on grade levels within Williamsville CUSD 15. Attendance zones can vary; confirm enrollment with the district.
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
55.1%
composite math + reading, all grades
Predicted
61.0%
based on IL schools with similar FRL share
Beats by
-5.9pp
below demographic expectation
What this means: About 55% of students here test proficient in math and reading, compared with the roughly 61% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 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 Williamsville High School
Williamsville High School's state test result (55.1% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Williamsville High School this school | 462 | 18.2% | 55.1% |
| Columbia High School Columbia | 606 | 15.2% | 56.5% |
| Central Comm High School Breese | 629 | 19.6% | 58.3% |
| Freeburg Community High School Freeburg | 689 | 18.1% | 57.1% |
| Rockridge High School Taylor Ridge | 330 | 20.6% | 42.5% |
| Riverdale Sr High School Port Byron | 324 | 16.0% | 51.9% |
Matched among Illinois high 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 Williamsville High School ranks
Among high schools| Measure | This school | In Illinois | In Sangamon County |
|---|---|---|---|
| State test proficiency ranked highest first | 55.1% | #57 of 573 | #1 of 9 |
| Enrollment ranked largest first | 462 | #343 of 708 | #6 of 12 |
| Students per teacher ranked fewest first | 14.0:1 | #240 of 528 | #5 of 11 |
| Diversity index ranked most diverse first | 13.3% | #450 of 537 | #10 of 11 |
| Free and reduced lunch ranked highest share first | 18.2% | #561 of 578 | #8 of 9 |
| Enrollment change since 2017-18 ranked steepest decline first | -1.1% | #334 of 358 | #7 of 9 |
Ranked against other public high 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
462
-14 (-3%) vs 2020
+70% since 1990-91, when it was 272
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 | 462 | 33 | 14.0:1 | 18% (84) |
| 2023-24 | 475 | 32.8 | 14.5:1 | 18% (86) |
| 2022-23 | 493 | 31.5 | 15.7:1 | 17% (82) |
| 2020-21 | 476 | N/A | N/A | N/A |
| 2017-18 | 467 | 31.5 | 14.8:1 | 9% (41) |
| 2015-16 | 479 | 31 | 15.4:1 | 7% (35) |
| 2010-11 | 427 | 28 | 15.3:1 | 8% (34) |
| 2000-01 | 353 | 30 | 11.8:1 | N/A |
| 1990-91 | 272 | 18 | 15.1:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Williamsville High School.
Since 2017-18: students down 1% (467 to 462); teachers up 5% (31.5 to 33).
About Williamsville High School
Williamsville High School is a public small high school in Williamsville, Illinois. Enrollment stands at 462 students, covering grades 9 through 12. It has 45% fewer students than the average for high schools in Illinois (about 834).
Williamsville CUSD 15 is made up of 3 schools with 1,458 students in all.
White students account for 92% of the school's enrollment. The school is also 4% multiracial. The White share of the county population is lower, at 78%. On a 0 to 100 scale, the school's diversity index is 13, compared with 70 nationally.
The school's 33 full-time-equivalent teachers translate to a student-to-teacher ratio of 14.0:1. The ratio is within a point of the 13.8:1 average for high schools in Illinois. At Williamsville High School, 18% of students qualify for free or reduced-price lunch in 2024-25. The rate at public schools in Sangamon County averages 48%, higher than here.
Williamsville High School earns an A- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 77% of Illinois public high schools.
After adjusting for student poverty, Williamsville High School lands between the top and bottom 10% of Illinois schools. Its average proficiency rate across its state test results is 55.1%; the prediction is 61.0%.
Looking at the county, Sangamon County, the median household earns about $75,357 a year, the share of adults with a bachelor's degree or higher is 37%, and about 9% of people live in poverty. Counting Williamsville High School, Sangamon County has 77 public schools.
Williamsville Jr High School sits about 0.2 miles from Williamsville High School. Williamsville High School has 2 other public schools within five miles. Williamsville High School comes in 5th of 9 nearby schools on average proficiency.
For locale, NCES codes Williamsville High School as Suburb: Mid-size.
Over 4 years, enrollment fell by 14 students, from 476 to 462.
This community page is for conversations about fundraisers, report cards, and school supplies. Teachers and staff are welcome to share updates too.
Sangamon County at a glance
View full county profilePopulation
194,947
Census ACS
Median income
$75,357
Household, ACS
Bachelor's+
37%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
77
27,345 students
Quick facts
Related schools
Other schools in Williamsville CUSD 15
- Sherman Elementary SchoolElementary · 552 students
- Williamsville Jr High SchoolMiddle · 444 students
Other schools in Williamsville
- Williamsville Jr High SchoolMiddle · 444 students
Nearby schools
- Williamsville Jr High School0.2 mi · 444
- Sherman Elementary School4.7 mi · 552
- Riverton High School6.6 mi · 357
- Cantrall Elementary School6.7 mi · 334
- Cantrall Intermediate School6.8 mi · 184
- Riverton Elementary School7.0 mi · 515
Frequently asked questions
About Williamsville High SchoolWhat is the total enrollment at Williamsville High School?
Williamsville High School enrolls approximately 462 students in grades 09-12.
What grades does Williamsville High School serve?
Williamsville High School serves grades 09-12.
How many teachers does Williamsville High School have?
Williamsville High School employs 33 FTE teachers, for a student-to-teacher ratio of 14.0:1.
What is the student diversity at Williamsville High School?
Student demographics at Williamsville High School are roughly 92% White, 2% Hispanic, 1% Black, 1% Asian, 4% Two or more.
What district is Williamsville High School in?
Williamsville High School is part of Williamsville CUSD 15.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.