Enrollment
146
High
DISTRICT 166 · STATE 834
SCHOOL COMMUNITY·CENTURY CUSD 100·NCES 173963004003
Century Jr/Sr High School
4721 Shawnee College Rd, Ullin, IL 62992 · (618) 845-3518 · Pulaski County
GRADES 06–12HIGH42-RURALTITLE IREGULAR SCHOOL146 STUDENTS
C
allk12 Grade
Scored higher than 27% of Illinois public high schools
- CTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C+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
9.3:1
16 FTE teachers
DISTRICT 10.5:1 · STATE 13.8:1
Free / Reduced Lunch
62%
90 students
DISTRICT 62% · 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 6 | 20 | 14% |
| Grade 7 | 23 | 16% |
| Grade 8 | 20 | 14% |
| Grade 9 | 24 | 16% |
| Grade 10 | 21 | 14% |
| Grade 11 | 14 | 10% |
| Grade 12 | 24 | 16% |
Student demographics
26%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 30% · 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 Century CUSD 100. Attendance zones can vary; confirm enrollment with the district.
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)English Language Arts
34.4%
IL avg 51.0% . +9.8pp since 2023
Math
26.6%
IL avg 37.9% . +12.8pp since 2023
What this means: On the IAR + ISA, Illinois's statewide test, about 34 of every 100 students at this school read and write at grade level and about 27 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 10 points since 2023, while math scores are up about 13 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 34.4% | 26.6% |
| 2023-24 | 24.6% | 13.8% |
% 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
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
25.3%
composite math + reading, all grades
Predicted
35.9%
based on IL schools with similar FRL share
Beats by
-10.7pp
below demographic expectation
What this means: About 25% of students here test proficient in math and reading, compared with the roughly 36% 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 Century Jr/Sr High School
Century Jr/Sr High School's state test result (25.3% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Century Jr/Sr High School this school | 146 | 61.6% | 25.3% |
| Western High School Barry | 141 | 61.7% | 38.5% |
| Virginia Jr/ Sr High School Virginia | 156 | 59.6% | 44.9% |
| Milford High School Campus Milford | 149 | 61.7% | 36.3% |
| Christopher High Christopher | 206 | 59.2% | 22.9% |
| West Central High School Biggsville | 212 | 62.3% | 17.8% |
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 Century Jr/Sr High School ranks
Among high schools| Measure | This school | In Illinois |
|---|---|---|
| State test proficiency ranked highest first | 25.3% | #406 of 573 |
| Math proficiency ranked highest first | 26.6% | #37 of 75 ▲ 10 |
| Reading proficiency ranked highest first | 34.4% | #57 of 75 ▲ 2 |
| Enrollment ranked largest first | 146 | #606 of 708 |
| Free and reduced lunch ranked highest share first | 61.6% | #194 of 578 |
| Enrollment change since 2017-18 ranked steepest decline first | -35.4% | #17 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 2024-25Enrollment
146
-49 (-25%) vs 2020
+1% since 1990-91, when it was 144
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 | 146 | 15.6 | 9.3:1 | 62% (90) |
| 2023-24 | 154 | 15.8 | 9.8:1 | 49% (75) |
| 2022-23 | 168 | 15 | 11.2:1 | 55% (93) |
| 2020-21 | 195 | N/A | N/A | N/A |
| 2017-18 | 226 | 14.3 | 15.8:1 | 60% (135) |
| 2015-16 | 207 | 12 | 17.3:1 | 52% (108) |
| 2010-11 | 186 | 14 | 13.3:1 | 54% (100) |
| 2000-01 | 163 | 14 | 11.6:1 | N/A |
| 1990-91 | 144 | 15 | 9.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Century Jr/Sr High School.
Since 2017-18: students down 35% (226 to 146); teachers up 10% (14.3 to 15.6).
About Century Jr/Sr High School
Located in Ullin, Illinois, Century Jr/Sr High School is a very small high school. In all, 146 students attend the school in grades 6 through 12. The school is 82% below the average for high schools in Illinois.
Century CUSD 100 runs Century Jr/Sr High School along with 1 other school, enrolling 331 students in total.
White students account for 86% of the school's enrollment. The school is also 7% Black and 6% multiracial. The White share of the county population is lower, at 62%. On a 0 to 100 scale, the school's diversity index is 26, compared with 70 nationally.
The school had 15.6 full-time-equivalent teachers in 2024-25. Its student-to-teacher ratio is 9.3:1. Across high schools in Illinois, the average ratio is 13.8:1. The eligibility rate for free or reduced-price meals is 62%. The average for public schools in Pulaski County is 81%.
Century Jr/Sr High School earns a C on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 27% of Illinois public high schools.
The model predicts 35.9% for a school in Illinois with Century Jr/Sr High School's free or reduced-price lunch share. Century Jr/Sr High School posts 25.3%.
Five-year Census Bureau estimates for Pulaski County show that the median household earns about $42,463 a year, about 13% of adults have at least a bachelor's degree, and roughly 17% of residents are in poverty. Pulaski County has 5 public schools with about 750 students, including Century Jr/Sr High School.
Among nearby public schools, Century Elementary School is closest at less than a tenth of a mile. Century Jr/Sr High School is one of several public schools in the area, with 5 others within ten miles. The school's 25.3% average proficiency ranks 4th among 8 nearby schools.
The NCES locale for Century Jr/Sr High School is Rural: Distant, which covers schools in rural territory some distance from an urban area.
Over 4 years, enrollment fell by 49 students, from 195 to 146.
Parents, students, and staff can share information on pickup and drop-off, after-school programs, and teacher feedback here. Parents, students, alumni, and staff are welcome to post.
Pulaski County at a glance
View full county profilePopulation
5,015
Census ACS
Median income
$42,463
Household, ACS
Bachelor's+
13%
Adults 25+
Poverty rate
17%
Below federal line
Schools in county
5
750 students
Quick facts
Related schools
Other schools in Century CUSD 100
- Century Elementary SchoolElementary · 185 students
Other schools in Ullin
- Century Elementary SchoolElementary · 185 students
- River to River Education CenterCombined
Nearby schools
- Century Elementary School0.1 mi · 185
- Dongola High School7.5 mi · 62
- Dongola Jr High School7.5 mi · 51
- Dongola Elementary School7.5 mi · 108
- Cypress Elementary School8.1 mi · 116
- Meridian Elementary School10.4 mi · 213
Frequently asked questions
About Century Jr/Sr High SchoolHow many students attend Century Jr/Sr High School?
Century Jr/Sr High School enrolls approximately 146 students in grades 06-12.
Is Century Jr/Sr High School an elementary, middle, or high school?
Century Jr/Sr High School is a high school covering grades 06-12.
What is the student-teacher ratio at Century Jr/Sr High School?
The student-to-teacher ratio at Century Jr/Sr High School is approximately 9.3:1 (16 FTE teachers).
What is the racial breakdown of students at Century Jr/Sr High School?
At Century Jr/Sr High School, the student body is approximately 86% White, 1% Hispanic, 7% Black, 6% Two or more.
Is Century Jr/Sr High School public or private?
Century Jr/Sr High School is a public K-12 school, overseen by Century CUSD 100.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.