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SCHOOL COMMUNITY·SACHEM CENTRAL SCHOOL DISTRICT·NCES 362535003509

SENECA MIDDLE SCHOOL

850 MAIN ST, HOLBROOK, NY 11741 · (631) 471-1850 · Suffolk County
GRADES 06–08MIDDLE21-SUBURBREGULAR SCHOOL928 STUDENTS
C+
allk12 Grade
Scored higher than 40% of New York public middle schools
  • B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • C-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 New York public middle schools

Enrollment
928
Middle
DISTRICT 889 · STATE 531
Student : Teacher
10.8:1
86 FTE teachers
DISTRICT 10.3:1 · STATE 10.3:1
Free / Reduced Lunch
33%
303 students
DISTRICT 33% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 628130%
Grade 733736%
Grade 830933%
Ungraded10%
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 56% · STATE 72% · US 70%
White
59764%
DISTRICT 61% · STATE 39% · US 43%
Hispanic
20522%
DISTRICT 25% · STATE 31% · US 30%
Black
313%
DISTRICT 4% · STATE 16% · US 15%
Asian
536%
DISTRICT 6% · STATE 10% · US 6%
Two+
414%
DISTRICT 3% · STATE 4% · US 5%
Native American
10%
DISTRICT 0% · STATE 1% · US 1%
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
Male
47151%
Female
45749%

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Test scores

NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)
English Language Arts
35.0%
NY avg 58.3% . +1.0pp since 2023
Math
81.3%
NY avg 57.4% . -18.7pp since 2023

What this means: On the NYS Assessments, New York's statewide test, about 35 of every 100 students at this school read and write at grade level and about 81 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are up about 1 points since 2023, while math scores are down about 19 points.

NYS Assessments results by year

School yearEnglish Language ArtsMath
2024-2535.0%81.3%
2023-2434.0%100.0%
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
53.9%
composite math + reading, all grades
Predicted
63.0%
based on NY schools with similar FRL share
Beats by
-9.1pp
below demographic expectation

What this means: About 54% of students here test proficient in math and reading, compared with the roughly 63% typical for New York 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 New York'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 SENECA MIDDLE SCHOOL

SENECA MIDDLE SCHOOL's state test result (53.9% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
SENECA MIDDLE SCHOOL this school92832.7%53.9%
UNION VALE MIDDLE SCHOOL
LAGRANGEVILLE
99028.1%53.1%
EAST ISLIP MIDDLE SCHOOL
ISLIP TERRACE
75828.9%63.7%
SAGAMORE MIDDLE SCHOOL
HOLTSVILLE
89337.7%58.5%
SAMOSET MIDDLE SCHOOL
LAKE RONKONKOMA
84739.4%56.8%
VAN WYCK JUNIOR HIGH SCHOOL
WAPPINGERS FALLS
87826.0%61.2%
Matched among New York middle 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 SENECA MIDDLE SCHOOL ranks

Among middle schools
MeasureThis schoolIn New YorkIn Suffolk County
State test proficiency
ranked highest first
53.9%#352 of 766#31 of 66
Math proficiency
ranked highest first
81.3%#177 of 768
▼ 137
#23 of 66
▼ 16
Reading proficiency
ranked highest first
35.0%#621 of 768
▼ 47
#50 of 66
▼ 10
Enrollment
ranked largest first
928#99 of 796#17 of 66
Students per teacher
ranked fewest first
10.8:1#429 of 683#44 of 66
Diversity index
ranked most diverse first
53.1%#293 of 688#35 of 66
Free and reduced lunch
ranked highest share first
32.7%#593 of 773#38 of 66
Enrollment change since 2017-18
ranked steepest decline first
-14.6%#226 of 524#27 of 59
Ranked against other public middle 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 2024-25
Enrollment
928
-110 (-11%) vs 2020
-22% since 1990-91, when it was 1,194
Student : Teacher
10.8:1
was 13.5:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2592885.910.8:133% (303)
2023-2497487.711.1:127% (265)
2022-2397382.511.8:122% (212)
2020-211,0387713.5:121% (219)
2017-181,0876616.5:121% (233)
2015-167555015.1:123% (176)
2010-117994816.6:113% (107)
2000-011,1388014.2:112% (131)
1990-911,1949213.0:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for SENECA MIDDLE SCHOOL.

About SENECA MIDDLE SCHOOL

Among the schools in HOLBROOK, New York, is SENECA MIDDLE SCHOOL, a large middle school. The school counted 928 students in 2024-25, covering grades 6 through 8. That puts enrollment 75% larger than the 531-student average for middle schools in New York.

SENECA MIDDLE SCHOOL reports to SACHEM CENTRAL SCHOOL DISTRICT, which has 15 schools and 11,556 students.

The share of White students at SENECA MIDDLE SCHOOL is 64%, a majority. The school is also 22% Hispanic, 6% Asian, 4% multiracial, and 3% Black. Census estimates put Suffolk County at about 66% White, close to the school's figure. A diversity index of 53% means there is a 53% chance two randomly chosen students at SENECA MIDDLE SCHOOL are from different groups.

SENECA MIDDLE SCHOOL has a student-to-teacher ratio of 10.8:1, with 85.9 full-time-equivalent teachers. The 10.3:1 average for middle schools in New York is close to this figure. The school has 33% of students eligible for free or reduced-price lunch.

Among New York public middle schools, SENECA MIDDLE SCHOOL outscored 40%, which works out to a C+ on the allk12 Grade.

On the allk12 BeatsExpectations measure, SENECA MIDDLE SCHOOL is 9.1 points below the average proficiency rate across its state test results predicted for its free or reduced-price lunch share: 53.9% actual, 63.0% predicted. That is outside both the top and bottom 10% in New York.

Looking at the county, Suffolk County, median household income comes to about $130,686, a bachelor's degree or higher is held by about 40% of adults, and the poverty rate is about 4%. The county has 343 public schools and about 222,439 students.

About 1.0 miles separate SENECA MIDDLE SCHOOL from the closest public school, MERRIMAC SCHOOL. Within five miles are at least 8 other public schools. Ranked by average proficiency, SENECA MIDDLE SCHOOL places 3rd out of 9 schools in its immediate area.

SENECA MIDDLE SCHOOL has an NCES locale of Suburb: Large.

In 2020-21, SENECA MIDDLE SCHOOL enrolled 1,038 students. By 2024-25, that number had fallen to 928. Staffing shifted too: the ratio moved from 13.5:1 to 10.8:1.

People can post here about special education services, counseling, and support programs and other school topics. Members of the school community can share what they know.

Suffolk County at a glance

View full county profile
Population
1,530,146
Census ACS
Median income
$130,686
Household, ACS
Bachelor's+
40%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
343
222,439 students

Quick facts

School name
SENECA MIDDLE SCHOOL
District
SACHEM CENTRAL SCHOOL DISTRICT
Address
850 MAIN ST, HOLBROOK, NY 11741
Phone
(631) 471-1850
County
Suffolk County
Level
Middle
Grade range
06–08
Total enrollment
928
Teachers (FTE)
86
Student–teacher ratio
10.8:1
Free and reduced lunch
303 (33%)
Locale
21-Suburb: Large
NCES ID
362535003509
Charter school
No
Virtual school
No

Related schools

Other schools in SACHEM CENTRAL SCHOOL DISTRICT
Other schools in HOLBROOK
Other Seneca Middle schools

2 other US public schools in 3 states are named Seneca Middle. SENECA MIDDLE SCHOOL is the 2nd largest of the 3.

Nearby schools

Frequently asked questions

About SENECA MIDDLE SCHOOL
How many students attend SENECA MIDDLE SCHOOL?
SENECA MIDDLE SCHOOL enrolls approximately 928 students in grades 06-08.
What age range does SENECA MIDDLE SCHOOL serve?
SENECA MIDDLE SCHOOL serves students from grade 06 through grade 08.
How many students per teacher at SENECA MIDDLE SCHOOL?
Approximately 10.8:1 students per teacher at SENECA MIDDLE SCHOOL.
How diverse is SENECA MIDDLE SCHOOL?
SENECA MIDDLE SCHOOL reports a student body of 64% White, 22% Hispanic, 3% Black, 6% Asian, 4% Two or more.
Who oversees SENECA MIDDLE SCHOOL?
SENECA MIDDLE SCHOOL is overseen by SACHEM CENTRAL SCHOOL DISTRICT in Suffolk County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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