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Schools›Illinois›Monticello
SCHOOL COMMUNITY·MONTICELLO CUSD 25·NCES 172655002843

Monticello High School

1 Sage Dr, Monticello, IL 61856 · (217) 762-8511 · Piatt County
GRADES 09–12HIGH32-TOWNREGULAR SCHOOL489 STUDENTS
A-
allk12 Grade
Scored higher than 81% 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.

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

Enrollment
489
High
DISTRICT 427 · STATE 834
Student : Teacher
13.6:1
36 FTE teachers
DISTRICT 14.3:1 · STATE 13.8:1
Free / Reduced Lunch
,
Title I proxy
DISTRICT 24% · STATE 56%
Community
6
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

GradeStudentsShare
Grade 911524%
Grade 1013027%
Grade 1111223%
Grade 1213227%
Student demographics
18%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 15% · STATE 69% · US 70%
White
44290%
DISTRICT 92% · STATE 45% · US 43%
Hispanic
122%
DISTRICT 2% · STATE 29% · US 30%
Black
153%
DISTRICT 2% · STATE 16% · US 15%
Asian
51%
DISTRICT 1% · STATE 6% · US 6%
Two+
133%
DISTRICT 3% · STATE 5% · US 5%
Pacific Islander
10%
DISTRICT 0% · STATE 0% · US 0%
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
Male
24350%
Female
24550%

School pathway

Feeds from
Monticello Middle School06–08
Based on grade levels within Monticello CUSD 25. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Where Monticello High School ranks

Among high schools
MeasureThis schoolIn Illinois
Enrollment
ranked largest first
489#332 of 708
Students per teacher
ranked fewest first
13.6:1#211 of 528
Diversity index
ranked most diverse first
17.7%#398 of 537
Enrollment change since 2017-18
ranked steepest decline first
-7.2%#217 of 358
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 2024-25
Enrollment
489
-12 (-2%) vs 2020
+24% since 1990-91, when it was 394
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2548936.113.6:1N/A
2023-2447935.613.5:1N/A
2022-2347636.313.1:1N/A
2020-21501N/AN/AN/A
2017-185273614.6:121% (112)
2015-165143315.6:118% (93)
2010-115553615.4:111% (60)
2000-014983414.7:1N/A
1990-913943212.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Monticello High School.

Since 2017-18: students down 7% (527 to 489); teachers unchanged (36 to 36.1).

About Monticello High School

The public high school Monticello High School is located in Monticello, Illinois. The school's enrollment of 489 students covers grades 9 through 12. Statewide, high schools in Illinois average about 834 students each.

Monticello CUSD 25 is the district for Monticello High School. It has 4 schools and 1,707 students.

The large majority of students at Monticello High School, 90%, are White. The rest of enrollment is 3% Black, 3% multiracial, and 2% Hispanic. The chance that two students picked at random at Monticello High School belong to different racial or ethnic groups, known as the diversity index, is 18%.

Teachers at the school number 36.1 full-time equivalents, and the ratio is 13.6:1. High schools in Illinois have a similar average ratio of 13.8:1.

Measured against Illinois public high schools, Monticello High School receives an A-. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

Census Bureau estimates for Piatt County show that median household income is about $94,811, a bachelor's degree or higher is held by about 33% of adults, and the share of residents below the poverty line is 5%. Monticello High School is one of 14 public schools in Piatt County, which together enroll about 3,086 students.

Washington School is the public school closest to Monticello High School, less than a tenth of a mile away. Inside a five-mile radius, there are 2 other public schools.

Locale data from NCES put Monticello High School in a town some distance from an urbanized area (Town: Distant).

Enrollment was essentially flat over 4 years: 501 in 2020-21, 489 in 2024-25.

Threads on this page can be about enrollment questions, class placement, and PTA news. Alumni can share how the school prepared them.

Piatt County at a glance

View full county profile
Population
16,695
Census ACS
Median income
$94,811
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
14
3,086 students

Quick facts

School name
Monticello High School
District
Monticello CUSD 25
Address
1 Sage Dr, Monticello, IL 61856
Phone
(217) 762-8511
County
Piatt County
Level
High
Grade range
09–12
Total enrollment
489
Teachers (FTE)
36
Student–teacher ratio
13.6:1
Locale
32-Town: Distant
NCES ID
172655002843
Charter school
No
Virtual school
No

Related schools

Other schools in Monticello CUSD 25
Other schools in Monticello
Other Monticello High schools

6 other US public schools in 7 states are named Monticello High. Monticello High School is the 4th largest of the 7.

Nearby schools

Frequently asked questions

About Monticello High School
How large is Monticello High School?
Monticello High School enrolls approximately 489 students in grades 09-12.
What grades does Monticello High School serve?
Monticello High School serves grades 09-12.
How many students per teacher at Monticello High School?
Approximately 13.6:1 students per teacher at Monticello High School.
How diverse is Monticello High School?
Monticello High School reports a student body of 90% White, 2% Hispanic, 3% Black, 1% Asian, 3% Two or more.
What district is Monticello High School in?
Monticello High School is part of Monticello CUSD 25.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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