Enrollment
225
High
DISTRICT 266 · STATE 468
SCHOOL COMMUNITY·MARTENSDALE-ST MARYS COMM SCHOOL DISTRICT·NCES 191875001097
Martensdale-St Marys Jr-Sr High School
390 Burlington, Martensdale, IA 50160 · (641) 764-2486 · Warren County
GRADES 07–12HIGH42-RURALREGULAR SCHOOL225 STUDENTS
A-
allk12 Grade
Scored higher than 78% 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.
- 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 Iowa public high schools
Student : Teacher
12.1:1
19 FTE teachers
DISTRICT 13.3:1 · STATE 17.3:1
Free / Reduced Lunch
27%
60 students
DISTRICT 26% · 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 | 42 | 19% |
| Grade 8 | 27 | 12% |
| Grade 9 | 47 | 21% |
| Grade 10 | 36 | 16% |
| Grade 11 | 36 | 16% |
| Grade 12 | 37 | 16% |
Student demographics
13%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 16% · 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 Martensdale-St Marys Comm School District. Attendance zones can vary; confirm enrollment with the district.
QUIET COMMUNITY
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START A DISCUSSIONTest scores
ISASP 2024-25 . % ProficientEnglish Language Arts
85.6%
IA avg 73.6% . +0.2pp since 2023
Math
77.7%
IA avg 70.9% . +5.2pp since 2023
What this means: On the ISASP, Iowa's statewide test, about 86 of every 100 students at this school read and write at grade level and about 78 of 100 do math at grade level. Across all Iowa schools, those numbers are about 74 and 71. Reading and writing scores have held steady since 2023, while math scores are up about 5 points.
ISASP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 85.6% | 77.7% |
| 2023-24 | 85.4% | 72.5% |
% 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
80.3%
composite math + reading, all grades
Predicted
78.6%
based on IA schools with similar FRL share
Beats by
+1.6pp
above demographic expectation
What this means: About 80% of students here test proficient in math and reading, compared with the roughly 79% 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 Martensdale-St Marys Jr-Sr High School
Martensdale-St Marys Jr-Sr High School's state test result (80.3% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Martensdale-St Marys Jr-Sr High School this school | 225 | 26.7% | 80.3% |
| North Butler Jr/Sr High School Greene | 254 | 27.6% | 72.7% |
| IKM-Manning High School Manning | 185 | 27.6% | 78.1% |
| South O'Brien Secondary School Paullina | 241 | 29.0% | 82.9% |
| MMCRU High School Marcus | 213 | 29.1% | 79.3% |
| Osage High School Osage | 294 | 28.2% | 84.3% |
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 Martensdale-St Marys Jr-Sr High School ranks
Among high schools| Measure | This school | In Iowa |
|---|---|---|
| State test proficiency ranked highest first | 80.3% | #57 of 313 |
| Math proficiency ranked highest first | 77.7% | #82 of 314 ▲ 44 |
| Reading proficiency ranked highest first | 85.6% | #56 of 314 ▼ 1 |
| Enrollment ranked largest first | 225 | #233 of 340 |
| Students per teacher ranked fewest first | 12.1:1 | #47 of 259 |
| Diversity index ranked most diverse first | 13.5% | #215 of 260 |
| Free and reduced lunch ranked highest share first | 26.7% | #241 of 320 |
| Enrollment change since 2017-18 ranked steepest decline first | -13.1% | #42 of 125 |
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
225
-26 (-10%) vs 2020
-5% since 1990-91, when it was 236
Student : Teacher
12.1:1
was 14.8:1
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 | 225 | 18.5 | 12.1:1 | 27% (60) |
| 2023-24 | 239 | 18.6 | 12.8:1 | 25% (59) |
| 2022-23 | 275 | 19.7 | 14.0:1 | 23% (62) |
| 2020-21 | 251 | 17 | 14.8:1 | 23% (57) |
| 2017-18 | 259 | 19.6 | 13.2:1 | 21% (55) |
| 2015-16 | 274 | 20 | 13.7:1 | 24% (65) |
| 2010-11 | 241 | 20 | 12.1:1 | 23% (55) |
| 2000-01 | 257 | 20 | 12.8:1 | 12% (30) |
| 1990-91 | 236 | 19 | 12.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Martensdale-St Marys Jr-Sr High School.
Since 2017-18: students down 13% (259 to 225); teachers down 5% (19.6 to 18.5).
About Martensdale-St Marys Jr-Sr High School
Martensdale-St Marys Jr-Sr High School is a high school in Martensdale, Iowa, and it is part of Martensdale-St Marys Comm School District. It teaches 225 students in grades 7 through 12. By comparison, high schools in Iowa enroll about 468 students on average.
Martensdale-St Marys Comm School District has 2 schools; together they serve 532 students.
At Martensdale-St Marys Jr-Sr High School, 93% of students are White. After that, the student body is 4% Hispanic. Census estimates put Warren County at about 93% White, close to the school's figure. On the diversity index, which measures the chance that two random students are from different groups, Martensdale-St Marys Jr-Sr High School scores 13%.
There are about 12.1 students for every full-time-equivalent teacher at Martensdale-St Marys Jr-Sr High School, which has 18.5. High schools in Iowa average 17.3:1, 5.2 more students per teacher than here. Free or reduced-price lunch eligibility at Martensdale-St Marys Jr-Sr High School is about 27%. The figure for public schools in Warren County is close, at 24%.
Martensdale-St Marys Jr-Sr High School earns an A- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 78% of Iowa public high schools.
Predicted from its free or reduced-price lunch share, Martensdale-St Marys Jr-Sr High School would score about 78.6%. It scores 80.3%, 1.6 points above that figure.
In Warren County, median household income comes to about $94,588, a bachelor's degree or higher is held by about 33% of adults, and the share of residents below the poverty line is 3%. Warren County counts 20 public schools with about 10,473 students.
Among nearby public schools, Martensdale Elementary School is closest at less than a tenth of a mile. Martensdale-St Marys Jr-Sr High School is one of several public schools in the area, with at least 8 others within ten miles. Martensdale-St Marys Jr-Sr High School comes in 4th of 8 nearby schools on average proficiency.
Locale data from NCES put Martensdale-St Marys Jr-Sr High School in rural territory some distance from an urban area (Rural: Distant).
Enrollment fell 10% over 4 years, reaching 225 in 2024-25. The ratio was 14.8:1 in 2020-21 and 12.1:1 in 2024-25.
You can use this page to share news and ask questions about fundraisers, report cards, and school supplies. Current and former families are welcome to add their experience.
Warren County at a glance
View full county profilePopulation
54,409
Census ACS
Median income
$94,588
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
3%
Below federal line
Schools in county
20
10,473 students
Quick facts
Related schools
Other schools in Martensdale-St Marys Comm School District
- Martensdale Elementary SchoolElementary · 307 students
Other schools in Martensdale
- Martensdale Elementary SchoolElementary · 307 students
Nearby schools
- Martensdale Elementary School0.0 mi · 307
- Orchard Hills Elementary7.1 mi · 558
- Oviatt Elementary School7.4 mi · 548
- Norwalk Middle School7.6 mi · 824
- Wilder Elementary School7.6 mi · 456
- Norwalk Senior High School7.7 mi · 1,035
Frequently asked questions
About Martensdale-St Marys Jr-Sr High SchoolHow large is Martensdale-St Marys Jr-Sr High School?
Martensdale-St Marys Jr-Sr High School enrolls approximately 225 students in grades 07-12.
What age range does Martensdale-St Marys Jr-Sr High School serve?
Martensdale-St Marys Jr-Sr High School serves students from grade 07 through grade 12.
What is the student-teacher ratio at Martensdale-St Marys Jr-Sr High School?
The student-to-teacher ratio at Martensdale-St Marys Jr-Sr High School is approximately 12.1:1 (19 FTE teachers).
What is the racial breakdown of students at Martensdale-St Marys Jr-Sr High School?
At Martensdale-St Marys Jr-Sr High School, the student body is approximately 93% White, 4% Hispanic, 1% Black, 1% Two or more.
Is Martensdale-St Marys Jr-Sr High School public or private?
Martensdale-St Marys Jr-Sr High School is a public K-12 school, overseen by Martensdale-St Marys Comm School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.