Enrollment
193
High
DISTRICT 214 · STATE 468
SCHOOL COMMUNITY·LAKE MILLS COMM SCHOOL DISTRICT·NCES 191611000965
Lake Mills Senior High School
102 S 4th Ave E, Lake Mills, IA 50450 · (641) 592-0893 · Winnebago County
GRADES 09–12HIGH43-RURALREGULAR SCHOOL193 STUDENTS
A-
allk12 Grade
Scored higher than 84% 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.
- A-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
10.3:1
19 FTE teachers
DISTRICT 16.8:1 · STATE 17.3:1
Free / Reduced Lunch
35%
68 students
DISTRICT 35% · 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 9 | 40 | 21% |
| Grade 10 | 50 | 26% |
| Grade 11 | 46 | 24% |
| Grade 12 | 57 | 30% |
Student demographics
32%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 31% · 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 Lake Mills 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
83.1%
IA avg 73.6% . -3.2pp since 2023
Math
74.2%
IA avg 70.9% . -5.5pp since 2023
What this means: On the ISASP, Iowa's statewide test, about 83 of every 100 students at this school read and write at grade level and about 74 of 100 do math at grade level. Across all Iowa schools, those numbers are about 74 and 71. Reading and writing scores are down about 3 points since 2023, while math scores are down about 6 points.
ISASP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 83.1% | 74.2% |
| 2023-24 | 86.3% | 79.7% |
% 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
79.7%
composite math + reading, all grades
Predicted
74.3%
based on IA schools with similar FRL share
Beats by
+5.4pp
above demographic expectation
What this means: About 80% of students here test proficient in math and reading, compared with the roughly 74% 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 Lake Mills Senior High School
Lake Mills Senior High School's state test result (79.7% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Lake Mills Senior High School this school | 193 | 35.2% | 79.7% |
| Alta-Aurelia High School Alta | 221 | 34.4% | 67.5% |
| Ridge View High School Holstein | 242 | 36.4% | 67.5% |
| Newell-Fonda High School Newell | 138 | 34.8% | 64.1% |
| Wapello Senior High School Wapello | 187 | 39.0% | 63.0% |
| New Hampton High School New Hampton | 318 | 37.4% | 77.6% |
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 Lake Mills Senior High School ranks
Among high schools| Measure | This school | In Iowa |
|---|---|---|
| State test proficiency ranked highest first | 79.7% | #67 of 313 |
| Math proficiency ranked highest first | 74.2% | #125 of 314 ▼ 85 |
| Reading proficiency ranked highest first | 83.1% | #78 of 314 ▼ 33 |
| Enrollment ranked largest first | 193 | #269 of 340 |
| Free and reduced lunch ranked highest share first | 35.2% | #164 of 320 |
| Enrollment change since 2017-18 ranked steepest decline first | -7.2% | #74 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
193
-21 (-10%) vs 2020
-8% since 1990-91, when it was 209
Student : Teacher
10.3:1
was 11.3:1
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 | 193 | 18.7 | 10.3:1 | 35% (68) |
| 2023-24 | 213 | 19.6 | 10.9:1 | 32% (68) |
| 2022-23 | 210 | 18.3 | 11.5:1 | 28% (58) |
| 2020-21 | 214 | 19 | 11.3:1 | 29% (61) |
| 2017-18 | 208 | 19.1 | 10.9:1 | 29% (60) |
| 2015-16 | 211 | 15 | 14.1:1 | 23% (48) |
| 2010-11 | 203 | 17 | 11.9:1 | 18% (37) |
| 2000-01 | 267 | 18 | 14.8:1 | 17% (46) |
| 1990-91 | 209 | 20 | 10.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Lake Mills Senior High School.
Since 2017-18: students down 7% (208 to 193); teachers down 2% (19.1 to 18.7).
About Lake Mills Senior High School
Students in Lake Mills, Iowa, attend Lake Mills Senior High School, a small high school. It reported 193 students in grades 9 through 12 in 2024-25. High schools in Iowa average about 468 students, which makes this school 59% below average.
Lake Mills Comm School District oversees Lake Mills Senior High School and 2 other schools, with 642 students in total.
Roughly 81% of students at Lake Mills Senior High School are White. The remaining students are 15% Hispanic and 4% multiracial. Among people living in Winnebago County, the White share is about 89%. On the diversity index, which measures the chance that two random students are from different groups, Lake Mills Senior High School scores 32%.
Based on 18.7 full-time-equivalent teachers, Lake Mills Senior High School has a ratio of 10.3:1. The average for high schools in Iowa, 17.3:1, is higher. Income data for the school show 35% of students eligible for free or reduced-price lunch. Public schools in Winnebago County average a similar 36%.
On the allk12 Grade, Lake Mills Senior High School lands at A-, ahead of 84% of Iowa public high schools.
The school's average proficiency rate across its state test results is 79.7%. For its free or reduced-price lunch share, the predicted value is 74.3%.
American Community Survey estimates for Winnebago County show that the median household earns about $67,642 a year, roughly 26% of adults have a four-year degree or more, and about 9% of residents live below the federal poverty line. Winnebago County counts 9 public schools with about 2,190 students.
Lake Mills Elementary School sits less than a tenth of a mile from Lake Mills Senior High School. Lake Mills Senior High School has 2 other public schools within five miles. Among 9 nearby schools that report test results, Lake Mills Senior High School ranks 4th on proficiency.
Federal records code the school's setting as Rural: Remote.
Enrollment in 2024-25 stood at 193, compared with 214 in 2020-21.
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Winnebago County at a glance
View full county profilePopulation
10,583
Census ACS
Median income
$67,642
Household, ACS
Bachelor's+
26%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
9
2,190 students
Quick facts
Related schools
Other schools in Lake Mills Comm School District
- Lake Mills Elementary SchoolElementary · 303 students
- Lake Mills Middle SchoolMiddle · 146 students
Other schools in Lake Mills
- Lake Mills Elementary SchoolElementary · 303 students
- Lake Mills Middle SchoolMiddle · 146 students
Nearby schools
- Lake Mills Elementary School0.0 mi · 303
- Lake Mills Middle School0.0 mi · 146
- Forest City Middle School11.9 mi · 330
- Forest City High School11.9 mi · 304
- Forest City Elementary School12.1 mi · 448
- Northwood-Kensett Middle/High School15.7 mi · 265
Frequently asked questions
About Lake Mills Senior High SchoolHow large is Lake Mills Senior High School?
Lake Mills Senior High School enrolls approximately 193 students in grades 09-12.
Is Lake Mills Senior High School an elementary, middle, or high school?
Lake Mills Senior High School is a high school covering grades 09-12.
What is the student-teacher ratio at Lake Mills Senior High School?
The student-to-teacher ratio at Lake Mills Senior High School is approximately 10.3:1 (19 FTE teachers).
What is the student diversity at Lake Mills Senior High School?
Student demographics at Lake Mills Senior High School are roughly 81% White, 15% Hispanic, 1% Black, 4% Two or more.
Who oversees Lake Mills Senior High School?
Lake Mills Senior High School is overseen by Lake Mills Comm School District in Winnebago County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.