Enrollment
308
Connecticut · 2024-25 NCES data
Other / mixed grade configuration · Ellington, CT
Crystal Lake School
Federal NCES profile for Crystal Lake School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090144000236
👥 S:T ratio 46
🌟 Gifted program 30
📋 Attendance 60
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Crystal Lake School earns 46/100 on the Resource Investment Index, with class sizes larger than 80% of Connecticut schools.
- #5 of 5
- public schools in Ellington · Resource Index
- 46
- Resource Index · Typical
- 13.4:1
- large classes for Connecticut
- 14.7%
- free-lunch eligible
Crystal Lake School has class sizes larger than 80% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Crystal Lake School ranks #5 of 5 public schools in Ellington, CT.
School address
District: Ellington School District · Connecticut
NCES ID 090144000236 Verify on NCES CCD record →
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
13.4:1
vs 12.1:1 Connecticut avg
+11% vs state
Free-lunch eligible
14.7%
vs 36.4% Connecticut avg
-60% vs state
Student-teacher ratio in context
How Crystal Lake School compares with Connecticut and U.S. medians
What stands out at Crystal Lake School
Crystal Lake School is a lower-poverty, mid-sized combined-grade school in Ellington, Connecticut, enrolling 308 students.
Class loads run somewhat heavier than typical: 13.4:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 14.7% of students eligible for free meals.
Enrollment of 308 puts it in the smaller third of Connecticut schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,003 scored Connecticut schools.
Among 241 similarly sized, similarly resourced-need Connecticut schools statewide, it ranks #201, in the lower tier once campus size and economic need are matched.
Its student body is led by White (77%) and Hispanic or Latino (10%) (diversity index 40/100).
15.9% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Ellington's public schools, it stands alongside Windermere School (627 students): Crystal Lake School is smaller than that campus by headcount and runs heavier classes (13.4:1 vs 12.3:1).
Ellington School District also operates Ellington High School (701 students) and Windermere School (627 students) alongside Crystal Lake 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
How Crystal Lake School compares
Crystal Lake School on the metrics families compare, against Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.4:1 | ▲ 11% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 14.7% | ▼ 60% | 36.4% | 51.7% |
| Enrollment | 308 | top 74% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.4:1
Leaner classes than 63% of US schools, a middle-of-the-pack class size.
308
Bigger than 33% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
14.7%
free-lunch eligible
- 60% below the Connecticut average of 36.4%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
13.4:1
students per teacher
- 11% above state mean
Top 80% in Connecticut - lower ratio than 20% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
15.9%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$20,308
per pupil, district-wide
- below Connecticut avg of $23,870
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
3
in-school suspensions + 1 out-of-school
Suspension rate: 1.0 per 100 students. Combined in-school and out-of-school rate: 1.3 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 76.6%
Hispanic or Latino 10.1%
Two or More 5.8%
African American 4.5%
Asian 2.9%
Largest group: White at 76.6% of enrollment.
Student-body diversity index 39.7/100
Simpson diversity index - at 39.7, Crystal Lake School is less mixed than the Connecticut school average of 50.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Ellington School District, which includes Crystal Lake School.
$20,308
Per student
-15%
vs Connecticut
Avg $23,870
+22%
vs U.S.
Avg $16,593
Revenue mix
Local 60.7%
State 35.1%
Federal 4.2%
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.
How Crystal Lake School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ellington High School | Larger | Similar economic need | Lower S:T ratio |
| Windermere School | Larger | Similar economic need | Similar S:T ratio |
| Center School | Larger | Similar economic need | Similar S:T ratio |
| Ellington Middle School | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Crystal Lake School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 701
- Students per teacher
- 10.6:1
- Resource Index
- 56/100
- Enrollment
- 627
- Students per teacher
- 12.3:1
- Resource Index
- 49/100
- Enrollment
- 445
- Students per teacher
- 13.5:1
- Resource Index
- 51/100
- Enrollment
- 393
- Students per teacher
- 11.6:1
- Resource Index
- 54/100
Similar other schools in Ellington
1 comparable other schools (grades Mixed) serving the same city.
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Connecticut, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~308 students)
Next steps
Verify locally before acting on Crystal Lake School's federal record.
- Compare Crystal Lake School against another school. Compare schools
- Ellington School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Crystal Lake School
How many students attend Crystal Lake School?
Crystal Lake School has 308 students enrolled. It is a public school in Ellington, CT.
What is the student-teacher ratio at Crystal Lake School?
The student-teacher ratio at Crystal Lake School is 13.4:1, which is 11% higher than the Connecticut average of 12.1:1 and 15% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Crystal Lake School?
14.7% of students at Crystal Lake School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Crystal Lake School?
The largest demographic group at Crystal Lake School is White at 76.6% of enrollment, in Ellington, CT.
What is the Resource Investment Index for Crystal Lake School?
Crystal Lake School has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Crystal Lake School rank among public schools in Ellington?
By Resource Investment Index, Crystal Lake School ranks #5 of 5 public schools in Ellington, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Ellington on the city page.
Is Crystal Lake School a good school?
Crystal Lake School earns 46/100 on the Resource Investment Index, with class sizes larger than 80% of Connecticut schools. 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.
What other schools are in Ellington School District?
Besides Crystal Lake School, Ellington School District also operates Ellington High School (701 students), Windermere School (627 students), and Center School (445 students). See the Ellington School District district page for the complete list.
Related tools
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.