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What's something Marengo High School does better than most schools?
Community prompt from u/allk12. Replies below.
Enrollment
685
High
STATE 834
SCHOOL COMMUNITY·MARENGO CHSD 154·NCES 172457002661
Marengo High School
110 Franks Rd, Marengo, IL 60152 · (815) 568-6511 · McHenry County
GRADES 09–12HIGH31-TOWNREGULAR SCHOOL685 STUDENTS
B
allk12 Grade
Scored higher than 63% of Illinois public high schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B-Beats 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
14.5:1
47 FTE teachers
STATE 13.8:1
Free / Reduced Lunch
32%
217 students
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 | 139 | 20% |
| Grade 10 | 194 | 28% |
| Grade 11 | 162 | 24% |
| Grade 12 | 190 | 28% |
Student demographics
46%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
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
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
44.8%
composite math + reading, all grades
Predicted
53.2%
based on IL schools with similar FRL share
Beats by
-8.5pp
below demographic expectation
What this means: About 45% of students here test proficient in math and reading, compared with the roughly 53% 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 Marengo High School
Marengo High School's state test result (44.8% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Marengo High School this school | 685 | 31.7% | 44.8% |
| Stillman Valley High School Stillman Valley | 433 | 30.3% | 46.6% |
| Beecher High School Beecher | 343 | 27.7% | 46.2% |
| Manteno High School Manteno | 587 | 34.6% | 42.8% |
| Genoa-Kingston High School Genoa | 485 | 39.4% | 39.1% |
| Johnsburg High School Johnsburg | 502 | 32.1% | 44.3% |
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 Marengo High School ranks
Among high schools| Measure | This school | In Illinois | In McHenry County |
|---|---|---|---|
| State test proficiency ranked highest first | 44.8% | #133 of 573 | #8 of 13 |
| Enrollment ranked largest first | 685 | #278 of 708 | #11 of 14 |
| Students per teacher ranked fewest first | 14.5:1 | #274 of 528 | #4 of 13 |
| Diversity index ranked most diverse first | 46.3% | #212 of 537 | #8 of 13 |
| Free and reduced lunch ranked highest share first | 31.7% | #493 of 578 | #10 of 13 |
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
685
+12 (+2%) vs 2020
+61% since 1990-91, when it was 425
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 | 685 | 47.3 | 14.5:1 | 32% (217) |
| 2023-24 | 689 | 48.3 | 14.3:1 | 34% (236) |
| 2022-23 | 685 | 44.3 | 15.4:1 | 31% (215) |
| 2020-21 | 673 | N/A | N/A | N/A |
| 2017-18 | 685 | 48.3 | 14.2:1 | 28% (192) |
| 2015-16 | 758 | 45 | 16.8:1 | 28% (213) |
| 2010-11 | 833 | 49 | 17.0:1 | 25% (208) |
| 2000-01 | 672 | 39 | 17.2:1 | N/A |
| 1990-91 | 425 | 32 | 13.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Marengo High School.
Since 2017-18: students unchanged (685 to 685); teachers down 2% (48.3 to 47.3).
About Marengo High School
Among the schools in Marengo, Illinois, is Marengo High School, a small high school. It educates 685 students in grades 9 through 12.
Marengo High School is listed under Marengo CHSD 154 in federal data.
At Marengo High School, White students make up 67% of the student body. The remaining shares are 29% Hispanic and 2% multiracial. McHenry County as a whole is about 80% White, so the school's share is lower. Marengo High School's diversity index is 46%, against a US figure of 70%.
Federal data list 47.3 full-time-equivalent teachers at Marengo High School in 2024-25, for a ratio of 14.5:1. That matches the 13.8:1 average for high schools in Illinois fairly closely. The school's rate of free or reduced-price lunch eligibility is 32%.
Marengo High School is graded B by allk12, scoring above 63% of Illinois public high schools once test results, poverty-adjusted performance, and the recent trend are combined.
BeatsExpectations compares each school's average proficiency rate on state tests with a prediction based on free or reduced-price lunch eligibility. For Marengo High School, the prediction is 53.2% and the result is 44.8%.
Across McHenry County, the median household income is $104,802, the share of adults with a bachelor's degree or higher is 35%, and about 4% of people live in poverty. In all, McHenry County has 89 public schools and roughly 50,123 students.
Marengo Comm Middle School is located about 0.4 miles from Marengo High School. The five-mile area around Marengo High School holds 4 other public schools. The nearest schools with test data average 52.3%, higher than Marengo High School's 44.8%.
The school's setting, by NCES definition, is Town: Fringe: in a town close to an urbanized area.
Enrollment was essentially flat over 4 years: 673 in 2020-21, 685 in 2024-25.
Topics for discussion here include science fairs, picture day, and bus routes. Anyone with firsthand experience at this school can post or comment.
McHenry County at a glance
View full county profilePopulation
312,591
Census ACS
Median income
$104,802
Household, ACS
Bachelor's+
35%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
89
50,123 students
Quick facts
Related schools
Other schools in Marengo
- Locust Elementary SchoolElementary · 501 students
- Marengo Comm Middle SchoolMiddle · 342 students
- Riley Comm Cons SchoolElementary · 277 students
- Ulysses S Grant Intermediate SchoolElementary · 249 students
Other Marengo High schools
One other US public school is named Marengo High. Marengo High School is the largest of the 2.
- Marengo High SchoolDixons Mills, AL · 223 students
Nearby schools
- Marengo Comm Middle School0.4 mi · 342
- Ulysses S Grant Intermediate School0.4 mi · 249
- Locust Elementary School0.6 mi · 501
- Riley Comm Cons School4.2 mi · 277
- Westwood Elementary School7.1 mi · 385
- Creekside Middle School7.7 mi · 736
Frequently asked questions
About Marengo High SchoolWhat is the total enrollment at Marengo High School?
Marengo High School enrolls approximately 685 students in grades 09-12.
What grades does Marengo High School serve?
Marengo High School serves grades 09-12.
How many students per teacher at Marengo High School?
Approximately 14.5:1 students per teacher at Marengo High School.
How diverse is Marengo High School?
Marengo High School reports a student body of 67% White, 29% Hispanic, 1% Black, 0% Asian, 2% Two or more.
Is Marengo High School public or private?
Marengo High School is a public K-12 school, overseen by Marengo CHSD 154.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.