Enrollment
358
High
DISTRICT 395 · STATE 468
SCHOOL COMMUNITY·CENTRAL LYON COMM SCHOOL DISTRICT·NCES 190696000308
Central Lyon Secondary School
1010 S Greene Street, Rock Rapids, IA 51246 · (712) 472-2664 · Lyon County
GRADES 07–12HIGH42-RURALREGULAR SCHOOL358 STUDENTS
A+
allk12 Grade
Scored higher than 96% of Iowa 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 Iowa public high schools
Student : Teacher
13.2:1
27 FTE teachers
DISTRICT 13.3:1 · STATE 17.3:1
Free / Reduced Lunch
24%
86 students
DISTRICT 27% · STATE 41%
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 7 | 56 | 16% |
| Grade 8 | 56 | 16% |
| Grade 9 | 62 | 17% |
| Grade 10 | 65 | 18% |
| Grade 11 | 54 | 15% |
| Grade 12 | 65 | 18% |
Student demographics
18%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 18% · STATE 48% · 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 Central Lyon Comm School District. Attendance zones can vary; confirm enrollment with the district.
QUIET COMMUNITY
Be the first to start a discussion at Central Lyon Secondary School.
START A DISCUSSIONTest scores
ISASP 2024-25 . % ProficientEnglish Language Arts
90.1%
IA avg 73.6% . +1.1pp since 2023
Math
82.6%
IA avg 70.9% . -3.0pp since 2023
What this means: On the ISASP, Iowa's statewide test, about 90 of every 100 students at this school read and write at grade level and about 83 of 100 do math at grade level. Across all Iowa schools, those numbers are about 74 and 71. Reading and writing scores are up about 1 points since 2023, while math scores are down about 3 points.
ISASP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 90.1% | 82.6% |
| 2023-24 | 89.0% | 85.6% |
% Proficient, all students and all tested grades.
Source: ISASP. 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
85.4%
composite math + reading, all grades
Predicted
79.9%
based on IA schools with similar FRL share
Beats by
+5.5pp
above demographic expectation
What this means: About 85% of students here test proficient in math and reading, compared with the roughly 80% typical for Iowa 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 Iowa'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 Central Lyon Secondary School
Central Lyon Secondary School's state test result (85.4% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Central Lyon Secondary School this school | 358 | 24.0% | 85.4% |
| Lawton-Bronson Junior-Senior High School Lawton | 339 | 23.9% | 86.1% |
| West Delaware High School Manchester | 436 | 25.0% | 80.8% |
| Union High School La Porte City | 279 | 24.0% | 76.8% |
| Cascade Junior-Senior High School Cascade | 392 | 23.2% | 84.2% |
| Hudson High School Hudson | 371 | 23.7% | 81.2% |
Matched among Iowa 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 Central Lyon Secondary School ranks
Among high schools| Measure | This school | In Iowa |
|---|---|---|
| State test proficiency ranked highest first | 85.4% | #15 of 313 |
| Math proficiency ranked highest first | 82.6% | #34 of 314 ▼ 18 |
| Reading proficiency ranked highest first | 90.1% | #16 of 314 ▲ 5 |
| Enrollment ranked largest first | 358 | #138 of 340 |
| Students per teacher ranked fewest first | 13.2:1 | #87 of 259 |
| Diversity index ranked most diverse first | 17.8% | #165 of 260 |
| Free and reduced lunch ranked highest share first | 24.0% | #258 of 320 |
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
358
+129 (+56%) vs 2020
+57% since 1990-91, when it was 228
Student : Teacher
13.2:1
was 10.9:1
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 | 358 | 27 | 13.2:1 | 24% (86) |
| 2023-24 | 364 | 25.9 | 14.1:1 | 24% (87) |
| 2022-23 | 363 | 25.3 | 14.3:1 | 24% (87) |
| 2020-21 | 229 | 21 | 10.9:1 | 30% (68) |
| 2017-18 | 198 | 19.9 | 9.9:1 | 30% (60) |
| 2015-16 | 184 | 16 | 11.5:1 | 26% (48) |
| 2010-11 | 185 | 16 | 11.6:1 | 26% (48) |
| 2000-01 | 204 | 18 | 11.3:1 | 16% (32) |
| 1990-91 | 228 | 22 | 10.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Central Lyon Secondary School.
Since 2017-18: students up 81% (198 to 358); teachers up 36% (19.9 to 27).
About Central Lyon Secondary School
Central Lyon Secondary School is a small high school in Rock Rapids, Iowa. The school's 358 students are in grades 7 through 12. Statewide, high schools in Iowa average about 468 students each.
Central Lyon Comm School District has 2 schools and 789 students, and Central Lyon Secondary School is one of those schools.
Central Lyon Secondary School's enrollment is 91% White. The remaining shares are 5% Hispanic and 3% Black. County-wide, about 94% of residents are White. Pick two students at random and there is an 18% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
The school has about 13.2 students per teacher and 27 full-time-equivalent teachers. This ratio sits 4.1 below the 17.3:1 average for high schools in Iowa. About 24% of enrolled students meet the income rules for free or reduced-price lunch.
allk12 grades Central Lyon Secondary School an A+. The grade compares the school only with Iowa public high schools, because each state gives its own test.
Based on student poverty, the model expects 79.9% at Central Lyon Secondary School; the school's average proficiency rate on state tests is 85.4%.
Lyon County has about 12,162 residents, and the median household income is $76,746, 20% of adults hold a bachelor's degree or higher, and about 4% of residents live below the federal poverty line. In all, Lyon County has 9 public schools and roughly 2,157 students.
The closest public school, Central Lyon Elementary School, is less than a tenth of a mile from Central Lyon Secondary School. There are 3 other public schools within ten miles. Central Lyon Secondary School places 1st of 9 on proficiency among the closest schools that report scores.
Central Lyon Secondary School falls in the Rural: Distant locale category, used for schools in rural territory some distance from an urban area.
Enrollment records show 229 in 2020-21 and 358 in 2024-25. Because schools sometimes add or drop grades, the two numbers may not be directly comparable. The number of students per teacher rose from 10.9 to 13.2 over 4 years.
Community posts for Central Lyon Secondary School can cover school safety, transportation, and start times. Questions from prospective families are welcome too.
Lyon County at a glance
View full county profilePopulation
12,162
Census ACS
Median income
$76,746
Household, ACS
Bachelor's+
20%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
9
2,157 students
Quick facts
Related schools
Other schools in Central Lyon Comm School District
- Central Lyon Elementary SchoolElementary · 431 students
Other schools in Rock Rapids
- Central Lyon Elementary SchoolElementary · 431 students
Nearby schools
- Central Lyon Elementary School0.1 mi · 431
- ELLSWORTH ELEMENTARY10.0 mi · 76
- ELLSWORTH SECONDARY10.0 mi · 60
- George-Little Rock Senior High School10.4 mi · 102
- George-Little Rock Middle School10.4 mi · 61
- HILLS-BEAVER CREEK SECONDARY12.4 mi · 190
Frequently asked questions
About Central Lyon Secondary SchoolHow large is Central Lyon Secondary School?
Central Lyon Secondary School enrolls approximately 358 students in grades 07-12.
Is Central Lyon Secondary School an elementary, middle, or high school?
Central Lyon Secondary School is a high school covering grades 07-12.
What is the student-teacher ratio at Central Lyon Secondary School?
The student-to-teacher ratio at Central Lyon Secondary School is approximately 13.2:1 (27 FTE teachers).
What is the racial breakdown of students at Central Lyon Secondary School?
At Central Lyon Secondary School, the student body is approximately 91% White, 5% Hispanic, 3% Black, 1% Two or more.
What district is Central Lyon Secondary School in?
Central Lyon Secondary School is part of Central Lyon Comm School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.