Enrollment
35
New York · 2024-25 NCES data
High school (grades 9-12) · Oceanside, NY
Federal NCES profile for Castleton Academy High School of Oceanside, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Castleton Academy High School of Oceanside earns 41/100 on the Resource Investment Index, with class sizes smaller than 98% of New York schools. It is also one of the smallest schools in New York.
Castleton Academy High School of Oceanside has class sizes smaller than 98% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Castleton Academy High School of Oceanside ranks #4 of 10 public schools in Oceanside, NY.
NCES ID 362157006053 Verify on NCES CCD record →
Enrollment
35
New York · 2024-25 NCES data
Teachers (FTE)
7.0
Federal CCD staff survey
Students per teacher
5:1
vs 11.8:1 New York avg
-58% vs state
Free-lunch eligible
34.0%
vs 56.2% New York avg
-40% vs state
How Castleton Academy High School of Oceanside compares with New York and U.S. medians
Smaller classes than state median
5:1 - 6.8 below the New York state median of 11.8:1, indicating smaller average class loads than typical schools in the state.
Castleton Academy High School of Oceanside is a small high school in Oceanside, New York, enrolling 35 students.
Classes run notably small here: at 5:1, Castleton Academy High School of Oceanside is leaner than roughly 98% of New York schools and 58% under the state's 11.8:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 34.0% of students eligible for free meals.
This is a small campus: fewer students than 99% of New York schools, with 35 enrolled.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Its student body is led by Hispanic or Latino (57%) and White (29%) (diversity index 59/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 175 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 31.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Oceanside Union Free School District also operates School 7-Oceanside Senior High School (1,668 students) and School 9m-Oceanside Middle School (801 students) alongside Castleton Academy High School of Oceanside.
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
Castleton Academy High School of Oceanside on the metrics families compare, against New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 5:1 | ▼ 58% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 34.0% | ▼ 40% | 56.2% | 51.7% |
| Enrollment | 35 | top 99% | - | - |
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: Hispanic or Latino at 57.1% of enrollment.
Simpson diversity index - at 58.5, Castleton Academy High School of Oceanside is more mixed than the New York school average of 45.5.
District-wide per-pupil expenditure for Oceanside Union Free School District, which includes Castleton Academy High School of Oceanside.
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 |
|---|---|---|---|
| School 7-Oceanside Senior High School | Larger | Lower economic need | Higher S:T ratio |
| School 9m-Oceanside Middle School | Larger | Lower economic need | Higher S:T ratio |
| School 6-Kindergarten Center | Larger | Lower economic need | No ratio data |
| School 5 | Larger | Lower economic need | Higher S:T ratio |
| School 3 | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Castleton Academy High School of Oceanside's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Castleton Academy High School of Oceanside'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.
Castleton Academy High School of Oceanside has 35 students enrolled. It is a high school in Oceanside, NY.
The student-teacher ratio at Castleton Academy High School of Oceanside is 5:1, which is 58% lower than the New York average of 11.8:1 and 68% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
34.0% of students at Castleton Academy High School of Oceanside are eligible for free lunch, compared to the New York average of 56.2%.
The largest demographic group at Castleton Academy High School of Oceanside is Hispanic or Latino at 57.1% of enrollment, in Oceanside, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.5/100.
Castleton Academy High School of Oceanside has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 5 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, Castleton Academy High School of Oceanside ranks #4 of 10 public schools in Oceanside, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Oceanside on the city page.
Castleton Academy High School of Oceanside earns 41/100 on the Resource Investment Index, with class sizes smaller than 98% of New York schools. It is also one of the smallest schools in New York. 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 Castleton Academy High School of Oceanside, Oceanside Union Free School District also operates School 7-Oceanside Senior High School (1,668 students), School 9m-Oceanside Middle School (801 students), and School 6-Kindergarten Center (625 students). See the Oceanside Union Free 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.
Published by
PlainSchools Editorial
Independent public-data reference that compiles, verifies, and contextualizes official datasets. We do not accept compensation from entities we cover, and every dataset cites its originating public source.
Last updated:
PlainSchools, “Castleton Academy High School of Oceanside, Oceanside NY.” 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/castleton-academy-high-school-of-oceanside-ny
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.