Enrollment
224
High
DISTRICT 257 · STATE 834
SCHOOL COMMUNITY·SOMONAUK CUSD 432·NCES 173657003764
Somonauk High School
501 W Market St, Somonauk, IL 60552 · (815) 498-2314 · DeKalb County
GRADES 09–12HIGH31-TOWNTITLE IREGULAR SCHOOL224 STUDENTS
A-
allk12 Grade
Scored higher than 84% of Illinois public high schools
- A-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 high schools
Student : Teacher
10.7:1
21 FTE teachers
DISTRICT 12.3:1 · STATE 13.8:1
Free / Reduced Lunch
41%
92 students
DISTRICT 40% · STATE 56%
Community
0
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 | 53 | 24% |
| Grade 10 | 54 | 24% |
| Grade 11 | 56 | 25% |
| Grade 12 | 61 | 27% |
Student demographics
27%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 28% · 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 Somonauk CUSD 432. 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
50.6%
composite math + reading, all grades
Predicted
47.8%
based on IL schools with similar FRL share
Beats by
+2.9pp
above demographic expectation
What this means: About 51% of students here test proficient in math and reading, compared with the roughly 48% 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 Somonauk High School
Somonauk High School's state test result (50.6% proficient) is higher than 4 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Somonauk High School this school | 224 | 41.1% | 50.6% |
| Putnam County High School Granville | 245 | 40.0% | 38.0% |
| Stockton Sr High School Stockton | 170 | 41.2% | 47.7% |
| Cerro Gordo Jr and Sr High School Cerro Gordo | 228 | 41.2% | 48.3% |
| Coop HS 1 Bismarck | 247 | 40.5% | N/A |
| Galva Jr-Sr High School Galva | 191 | 41.4% | 38.9% |
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 Somonauk High School ranks
Among high schools| Measure | This school | In Illinois | In DeKalb County |
|---|---|---|---|
| State test proficiency ranked highest first | 50.6% | #87 of 573 | #1 of 8 |
| Enrollment ranked largest first | 224 | #510 of 708 | #6 of 8 |
| Students per teacher ranked fewest first | 10.7:1 | #37 of 528 | #1 of 8 |
| Diversity index ranked most diverse first | 26.8% | #318 of 537 | #8 of 8 |
| Free and reduced lunch ranked highest share first | 41.1% | #391 of 578 | #4 of 8 |
| Enrollment change since 2017-18 ranked steepest decline first | -17.3% | #74 of 358 | N/A |
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
224
-40 (-15%) vs 2020
-2% since 1990-91, when it was 228
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 | 224 | 20.9 | 10.7:1 | 41% (92) |
| 2023-24 | 228 | 18.8 | 12.1:1 | 36% (82) |
| 2022-23 | 238 | 17.1 | 13.9:1 | 36% (85) |
| 2020-21 | 264 | N/A | N/A | N/A |
| 2017-18 | 271 | 18 | 15.1:1 | 21% (58) |
| 2015-16 | 271 | 17 | 15.9:1 | 17% (45) |
| 2010-11 | 299 | 20 | 14.9:1 | 21% (62) |
| 2000-01 | 474 | 27 | 17.6:1 | N/A |
| 1990-91 | 228 | 16 | 14.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Somonauk High School.
Since 2017-18: students down 17% (271 to 224); teachers up 16% (18 to 20.9).
About Somonauk High School
Somonauk High School is a public small high school in Somonauk, Illinois. A federal count lists 224 students at the school, in grades 9 through 12. Average enrollment for high schools in Illinois is about 834, so this school runs 73% smaller than that.
Somonauk CUSD 432 is responsible for 3 schools, Somonauk High School included, with 771 students in all.
Somonauk High School enrolls a student body that is 85% White. The rest of enrollment is 11% Hispanic. Census estimates put the White share of DeKalb County's population at about 74%. Somonauk High School has a diversity index of 27%, compared with 70% for all US public school students.
Teacher staffing is 20.9 full-time equivalents, or about 10.7 students per teacher. The 13.8:1 average for high schools in Illinois is higher than this school's figure. Eligibility for subsidized school meals is 41%.
allk12 grades Somonauk High School an A-. The grade compares the school only with Illinois public high schools, because each state gives its own test.
Given its share of students eligible for free or reduced-price lunch, Somonauk High School would be expected to post about 47.8%. Its actual average proficiency rate on state tests is 50.6%.
Federal survey data for DeKalb County show that median household income is about $70,724, roughly 33% of adults have a four-year degree or more, and the share of residents below the poverty line is 10%. Somonauk High School is among the 43 public schools in DeKalb County.
Nearby, Somonauk Middle School is less than a tenth of a mile away. Other public schools within five miles number at least 8. Ranked by average proficiency, Somonauk High School places 6th out of 9 schools in its immediate area.
The school's locale code, Town: Fringe, means it is in a town close to an urbanized area.
A comparison of 2020-21 and 2024-25 shows enrollment down 15%, from 264 to 224.
The discussion area below is open to posts about school events, clubs, and volunteer needs. Questions from prospective families are welcome too.
DeKalb County at a glance
View full county profilePopulation
100,703
Census ACS
Median income
$70,724
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
43
16,328 students
Quick facts
Related schools
Other schools in Somonauk CUSD 432
- James R Wood Elementary SchoolElementary · 298 students
- Somonauk Middle SchoolMiddle · 249 students
Other schools in Somonauk
- James R Wood Elementary SchoolElementary · 298 students
- Somonauk Middle SchoolMiddle · 249 students
Nearby schools
- Somonauk Middle School0.0 mi · 249
- James R Wood Elementary School0.2 mi · 298
- Prairie View Elementary School3.6 mi · 221
- Sandwich Middle School3.7 mi · 420
- Lynn G Haskin Elementary School3.7 mi · 226
- Herman E Dummer3.7 mi · 275
Frequently asked questions
About Somonauk High SchoolHow many students attend Somonauk High School?
Somonauk High School enrolls approximately 224 students in grades 09-12.
What age range does Somonauk High School serve?
Somonauk High School serves students from grade 09 through grade 12.
How many teachers does Somonauk High School have?
Somonauk High School employs 21 FTE teachers, for a student-to-teacher ratio of 10.7:1.
How diverse is Somonauk High School?
Somonauk High School reports a student body of 85% White, 11% Hispanic, 1% Black, 2% Asian, 1% Two or more.
Is Somonauk High School public or private?
Somonauk High School is a public K-12 school, overseen by Somonauk CUSD 432.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.