Enrollment
383
Delaware · 2024-25 NCES data
Elementary school (grades K-5) · Seaford, DE
Sussex Montessori School
Federal NCES profile for Sussex Montessori School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataElementary school (grades K-5)NCES 100006300387Charter school
👥 S:T ratio 19
🌟 Gifted program 30
📋 Attendance 62
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sussex Montessori School earns 37/100 on the Resource Investment Index, with class sizes larger than 97% of Delaware schools.
- #4 of 4
- elementary schools in Seaford · Resource Index
- 37
- Resource Index · Typical
- 20.2:1
- large classes for Delaware
- 383
- students enrolled
Sussex Montessori School has class sizes larger than 97% of Delaware schools. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Sussex Montessori School ranks #4 of 4 elementary schools in Seaford, DE.
School address
District: Sussex Montessori School · Delaware
NCES ID 100006300387 Verify on NCES CCD record →
Teachers (FTE)
19.0
Federal CCD staff survey
Students per teacher
20.2:1
vs 13.9:1 Delaware avg
+45% vs state
Student-teacher ratio in context
How Sussex Montessori School compares with Delaware and U.S. medians
What stands out at Sussex Montessori School
Sussex Montessori School is a mid-sized charter elementary school in Seaford, Delaware, enrolling 383 students.
Class loads run heavy: 20.2:1 is larger than about 97% of Delaware schools and 45% above the 13.9:1 state mean, so each teacher carries more students than is typical.
Enrollment of 383 puts it in the smaller third of Delaware schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 222 scored Delaware schools.
Its student body is led by White (52%) and African American (25%) (diversity index 64/100).
15.4% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Sussex Montessori School spends $12,059 per pupil, 29% below the Delaware average, a leaner-resourced district than most.
Its district draws 22.1% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Seaford's elementary schools, it stands alongside Seaford Central Elementary School (473 students): Sussex Montessori School is smaller than that campus by headcount and runs heavier classes (20.2:1 vs 15.3:1).
Sussex Montessori School is a single-school charter district, so Sussex Montessori School operates independently rather than alongside district-mates.
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 Sussex Montessori School compares
Sussex Montessori School on the metrics families compare, against Delaware and U.S. means.
| Metric | This school | vs Delaware | Delaware avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.2:1 | ▲ 45% | 13.9:1 | 15.7:1 |
| Enrollment | 383 | top 74% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.2:1
Leaner classes than 15% of US schools, heavier class loads than most.
383
Bigger than 45% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
20.2:1
students per teacher
- 45% above state mean
Top 97% in Delaware - lower ratio than 3% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
15.4%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$12,059
per pupil, district-wide
- below Delaware avg of $16,990
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 52.2%
African American 24.8%
Hispanic or Latino 13.6%
Two or More 8.6%
Asian 0.8%
Largest group: White at 52.2% of enrollment.
Student-body diversity index 64.0/100
Simpson diversity index - at 64.0, Sussex Montessori School is more mixed than the Delaware school average of 61.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Sussex Montessori School, which includes Sussex Montessori School.
$12,059
Per student
-29%
vs Delaware
Avg $16,990
-27%
vs U.S.
Avg $16,593
Revenue mix
Local 10.8%
State 67.1%
Federal 22.1%
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.
Similar elementary schools in Seaford
3 comparable elementary schools (grades K-5) serving the same city.
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Delaware, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~383 students)
Next steps
Verify locally before acting on Sussex Montessori School's federal record.
- Compare Sussex Montessori School against another school. Compare schools
- Sussex Montessori School'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 Sussex Montessori School
How many students attend Sussex Montessori School?
Sussex Montessori School has 383 students enrolled. It is an elementary school in Seaford, DE.
What is the student-teacher ratio at Sussex Montessori School?
The student-teacher ratio at Sussex Montessori School is 20.2:1, which is 45% higher than the Delaware average of 13.9:1 and 29% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Sussex Montessori School?
The largest demographic group at Sussex Montessori School is White at 52.2% of enrollment, in Seaford, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.0/100.
What is the Resource Investment Index for Sussex Montessori School?
Sussex Montessori School has a Resource Investment Index of 37/100 (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 Sussex Montessori School rank among elementary schools in Seaford?
By Resource Investment Index, Sussex Montessori School ranks #4 of 4 elementary schools in Seaford, DE. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Seaford on the city page.
Is Sussex Montessori School a good school?
Sussex Montessori School earns 37/100 on the Resource Investment Index, with class sizes larger than 97% of Delaware 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 Sussex Montessori School?
None; Sussex Montessori School is a single-school charter district, and Sussex Montessori School is its only campus.
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.