Enrollment
463
Iowa · 2024-25 NCES data
Middle school (grades 6-8) · Mason City, IA
Federal NCES profile for John Adams Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
The verdict
John Adams Middle School earns 42/100 on the Resource Investment Index, with class sizes near the Iowa median.
John Adams Middle School has class sizes near the Iowa median. Computed live against every Iowa school reporting to NCES.
By Resource Investment Index, John Adams Middle School ranks #6 of 9 public schools in Mason City, IA.
NCES ID 191878001105 Verify on NCES CCD record →
Enrollment
463
Iowa · 2024-25 NCES data
Teachers (FTE)
34.0
Federal CCD staff survey
Students per teacher
13.6:1
vs 14.8:1 Iowa avg
-8% vs state
Free-lunch eligible
50.0%
vs 36.4% Iowa avg
+37% vs state
How John Adams Middle School compares with Iowa and U.S. medians
At or below state median
13.6:1 - 1.2 below the Iowa state median of 14.8:1, indicating smaller average class loads than typical schools in the state.
John Adams Middle School is a higher-need, mid-sized middle school in Mason City, Iowa, enrolling 463 students.
At 13.6:1, its student-teacher ratio sits close to the Iowa median, within a few percentage points of the 14.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat above the state's typical profile, with 50.0% of students eligible for free meals.
Enrollment of 463 puts it in the larger third of Iowa schools by headcount.
Its Resource Investment Index lands in the lower third of 1,322 scored Iowa schools.
Against 238 statewide peers matched on enrollment and economic need, it ranks mid-pack at #129.
Its student body is led by White (67%) and Hispanic or Latino (13%) (diversity index 52/100).
Counselor coverage is strong, about 232 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 55.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Discipline events run high: 590 in- and out-of-school suspensions were reported for 463 students in the 2021-22 Civil Rights Data Collection.
Mason City Comm School District also operates Mason City High School (891 students) and Lincoln Intermediate (485 students) alongside John Adams Middle School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
John Adams Middle School on the metrics families compare, against Iowa and U.S. means.
| Metric | This school | vs Iowa | Iowa avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.6:1 | ▼ 8% | 14.8:1 | 15.7:1 |
| Free-lunch eligible | 50.0% | ▲ 37% | 36.4% | 51.7% |
| Enrollment | 463 | top 23% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Largest group: White at 67.0% of enrollment.
Simpson diversity index - at 52.2, John Adams Middle School is more mixed than the Iowa school average of 33.8.
District-wide per-pupil expenditure for Mason City Comm School District, which includes John Adams Middle School.
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mason City High School | Larger | Lower economic need | Higher S:T ratio |
| Lincoln Intermediate | Similar size | Similar economic need | Similar S:T ratio |
| Harding Elementary School | Similar size | Similar economic need | Higher S:T ratio |
| Hoover Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Roosevelt Elementary School | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to John Adams Middle School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of Iowa, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on John Adams Middle School's federal record.
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
John Adams Middle School has 463 students enrolled. It is a middle school in Mason City, IA.
The student-teacher ratio at John Adams Middle School is 13.6:1, which is 8% lower than the Iowa average of 14.8:1 and 13% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
50.0% of students at John Adams Middle School are eligible for free lunch, compared to the Iowa average of 36.4%.
The largest demographic group at John Adams Middle School is White at 67.0% of enrollment, in Mason City, IA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 52.2/100.
John Adams Middle School has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, John Adams Middle School ranks #6 of 9 public schools in Mason City, IA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Mason City on the city page.
John Adams Middle School earns 42/100 on the Resource Investment Index, with class sizes near the Iowa median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
Besides John Adams Middle School, Mason City Comm School District also operates Mason City High School (891 students), Lincoln Intermediate (485 students), and Harding Elementary School (387 students). See the Mason City Comm School District district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.
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PlainSchools, “John Adams Middle School, Mason City IA.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/john-adams-middle-school-ia
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