Enrollment
292
Elementary
DISTRICT 347 · STATE 325
SCHOOL COMMUNITY·MASON CITY COMM SCHOOL DISTRICT·NCES 191878001104
Jefferson Elementary School
1421 4th St. SE, Mason City, IA 50401 · (641) 421-4411 · Cerro Gordo County
GRADES PK–04ELEMENTARY33-TOWNREGULAR SCHOOL292 STUDENTS
A
allk12 Grade
Scored higher than 90% of Iowa public elementary 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 elementary schools
Student : Teacher
11.0:1
27 FTE teachers
DISTRICT 12.8:1 · STATE 13.7:1
Free / Reduced Lunch
39%
115 students
DISTRICT 49% · STATE 41%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 67 | 23% |
| Grade 1 | 44 | 15% |
| Grade 2 | 54 | 18% |
| Grade 3 | 67 | 23% |
| Grade 4 | 60 | 21% |
This year's kindergarten class (67) is 12% larger than its 4th grade class (60).
Student demographics
39%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 50% · 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
Students here typically continue to
Based on grade levels within Mason City Comm School District. Attendance zones can vary; confirm enrollment with the district.
Test scores
ISASP 2024-25 . % ProficientEnglish Language Arts
78.2%
IA avg 73.6% . +1.6pp since 2023
Math
86.3%
IA avg 70.9% . +0.0pp since 2023
What this means: On the ISASP, Iowa's statewide test, about 78 of every 100 students at this school read and write at grade level and about 86 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 2 points since 2023, while math scores have held steady.
ISASP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 78.2% | 86.3% |
| 2023-24 | 76.6% | 86.3% |
% Proficient, all students and all tested grades.
Source: ISASP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of IA schools after controlling for student poverty
Actual proficiency
81.8%
composite math + reading, all grades
Predicted
72.3%
based on IA schools with similar FRL share
Beats by
+9.6pp
above demographic expectation
What this means: About 82% of students here test proficient in math and reading, well above the roughly 72% typical for Iowa schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 10 points, placing it in Iowa's top 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 Jefferson Elementary School
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Jefferson Elementary School this school | 292 | 39.4% | 81.8% |
| Whittier Elementary School Clinton | 331 | 40.5% | 82.9% |
| Wilkins Elementary School Marion | 348 | 41.1% | 69.1% |
| Dyersville Elementary School Dyersville | 322 | 38.2% | N/A |
| Parkview Elementary School Marion | 267 | 42.3% | N/A |
| Longfellow Elementary Marion | 254 | 42.5% | N/A |
Matched among Iowa elementary 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 Jefferson Elementary School ranks
Among elementary schools| Measure | This school | In Iowa | In Cerro Gordo County |
|---|---|---|---|
| State test proficiency ranked highest first | 81.8% | #104 of 564 | #1 of 6 |
| Math proficiency ranked highest first | 86.3% | #95 of 564 ▼ 9 | #1 of 6 no change |
| Reading proficiency ranked highest first | 78.2% | #180 of 564 ▼ 11 | #2 of 6 no change |
| Enrollment ranked largest first | 292 | #400 of 705 | #6 of 6 |
| Students per teacher ranked fewest first | 11.0:1 | #40 of 561 | #1 of 6 |
| Diversity index ranked most diverse first | 38.9% | #276 of 561 | #4 of 6 |
| Free and reduced lunch ranked highest share first | 39.4% | #375 of 666 | #4 of 6 |
| Enrollment change since 2017-18 ranked steepest decline first | -30.0% | #30 of 359 | N/A |
Ranked against other public elementary 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
292
-64 (-18%) vs 2020
-32% since 1990-91, when it was 431
Student : Teacher
11.0:1
was 13.2:1
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 | 292 | 26.6 | 11.0:1 | 39% (115) |
| 2023-24 | 307 | 25.6 | 12.0:1 | 47% (143) |
| 2022-23 | 317 | 26.1 | 12.1:1 | 47% (148) |
| 2020-21 | 356 | 27 | 13.2:1 | 41% (147) |
| 2017-18 | 417 | 26.2 | 15.9:1 | 30% (127) |
| 2015-16 | 434 | 25 | 17.4:1 | 35% (150) |
| 2010-11 | 447 | 27 | 16.6:1 | 32% (144) |
| 2000-01 | 467 | 29 | 16.1:1 | 18% (84) |
| 1990-91 | 431 | 22 | 19.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Jefferson Elementary School.
Since 2017-18: students down 30% (417 to 292); teachers up 1% (26.2 to 26.6).
About Jefferson Elementary School
At 1421 4th St. SE in Mason City, Iowa, Jefferson Elementary School operates as a medium-sized elementary school. Its 292 students are spread across pre-K through 4.
Mason City Comm School District serves 3,406 students across 9 schools.
White students are the majority at Jefferson Elementary School, with 77% of enrollment. It is also 7% Hispanic, 6% Black, 5% multiracial, and 4% Pacific Islander. Cerro Gordo County's residents are about 90% White, 12 points above the school's share. Pick two students at random and there is a 39% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
A ratio of 11.0:1 comes from the school's 26.6 full-time-equivalent teachers. The school has fewer students per teacher than the 13.7:1 average for elementary schools in Iowa. The lunch program counts 39% of students at Jefferson Elementary School as eligible for free or reduced-price meals.
The allk12 Grade for Jefferson Elementary School is A. Compared with Iowa public elementary schools, the school scored higher than 90% on a mix of test scores, poverty-adjusted results, and recent trend.
Jefferson Elementary School outperforms its prediction by 9.6 points. The model expects 72.3% for a school with its free or reduced-price lunch share in Iowa; the school's rate is 81.8%.
Cerro Gordo County has these Census figures: the median household income is $68,189, about 24% of adults have at least a bachelor's degree, and roughly 6% of residents are in poverty. In all, Cerro Gordo County has 13 public schools and roughly 5,248 students.
Nearest public school: John Adams Middle School, about 0.3 miles away. A five-mile radius around the school includes at least 8 other public schools. Local comparison: Jefferson Elementary School ranks 1st of 7 nearby schools, at 81.8% versus a 64.5% average.
Its location is classified as Town: Remote by the National Center for Education Statistics.
Federal data show an 18% enrollment decrease, from 356 in 2020-21 to 292 in 2024-25. Students per teacher fell from 13.2 in 2020-21 to 11.0 in 2024-25.
The discussion area below is open to posts about sports schedules, lunch menus, and spirit week. Reviews and ratings from people who know the school are welcome.
Cerro Gordo County at a glance
View full county profilePopulation
42,632
Census ACS
Median income
$68,189
Household, ACS
Bachelor's+
24%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
13
5,248 students
Quick facts
Related schools
Other schools in Mason City Comm School District
- Mason City High SchoolHigh · 891 students
- Lincoln IntermediateMiddle · 485 students
- John Adams Middle SchoolMiddle · 463 students
- Harding Elementary SchoolElementary · 387 students
- Hoover Elementary SchoolElementary · 361 students
- Roosevelt Elementary SchoolElementary · 348 students
Other schools in Mason City
- Mason City High SchoolHigh · 891 students
- Lincoln IntermediateMiddle · 485 students
- John Adams Middle SchoolMiddle · 463 students
- Harding Elementary SchoolElementary · 387 students
- Hoover Elementary SchoolElementary · 361 students
- Roosevelt Elementary SchoolElementary · 348 students
Other Jefferson Elementary schools
143 other US public schools in 31 states are named Jefferson Elementary. Jefferson Elementary School is the 106th largest of the 144.
- Jefferson Elementary SchoolMuscatine, IA · 441 students
- Jefferson Elementary SchoolDavenport, IA · 384 students
- Jefferson Elementary SchoolClinton, IA · 376 students
- Jefferson Elementary SchoolDes Moines, IA · 312 students
- Jefferson Elementary SchoolJefferson, GA · 1,011 students
Nearby schools
- John Adams Middle School0.3 mi · 463
- Mason City High School0.3 mi · 891
- Alternative School0.4 mi · 91
- Mason City Virtual Academy0.4 mi · 88
- Harding Elementary School1.3 mi · 387
- Roosevelt Elementary School1.3 mi · 348
Frequently asked questions
About Jefferson Elementary SchoolHow large is Jefferson Elementary School?
Jefferson Elementary School enrolls approximately 292 students in grades PK-04.
Is Jefferson Elementary School an elementary, middle, or high school?
Jefferson Elementary School is an elementary school covering grades PK-04.
What is the student-teacher ratio at Jefferson Elementary School?
The student-to-teacher ratio at Jefferson Elementary School is approximately 11.0:1 (27 FTE teachers).
What is the racial breakdown of students at Jefferson Elementary School?
At Jefferson Elementary School, the student body is approximately 77% White, 7% Hispanic, 6% Black, 1% Asian, 5% Two or more.
Is Jefferson Elementary School public or private?
Jefferson Elementary School is a public K-12 school, overseen by Mason City Comm School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.