New YorkSchoolsCENTRAL ISLIP SENIOR HIGH SCHOOL

CENTRAL ISLIP SENIOR HIGH SCHOOL

PublicRegular
CENTRAL ISLIP, New York · CENTRAL ISLIP UNION FREE SCHOOL DISTRICT
Teachers153.0FTE
Ratio17.0:1students per teacher
Students2,597enrolled
SCHOOL SNAPSHOT
Students2,597
Grade Span9–12
Student:Teacher17.0:1
Free/Reduced Lunch66%
Title INo
SectorPublic
Student : Teacher
17.0:1
0.0%vs prior yrUS avg 15.4:1
Teacher FTE
154
0.7%vs prior yr
Enrollment
2,615
0.7%vs prior yr
Years of Data
5
2020–2024
Counselors
1:343
1.2%vs prior yrASCA max 1:250
Nurses
1:1,201
52%vs prior yrNASN max 1:750
Psychologists
1:1,201
1.2%vs prior yrNASP max 1:500
Social Workers
1:1,201
1.2%vs prior yrSSWAA max 1:250
Trends & 5-year history below

Pupil : Teacher Ratio — 5-Year Trend

15.2:115.7:116.2:116.7:117.2:117.7:12020202120222023202416.4:116.4:117.5:117.0:117.0:1This schoolUS public-school avg

Enrollment & Teacher FTE

2,3842,4342,4832,5332,5822,632145147149151153155202020212022202320242,4012,4042,5762,5972,615146147147153154EnrollmentTeacher FTE

Year-by-year workforce

Metric20202021202220232024Nat Avg
Enrollment2,4012,4042,5762,5972,615
Teacher FTE146147147153154
Pupil : Teacher ratio16.4:116.4:117.5:117.0:117.0:115.4:1

What These Numbers Mean

Teacher FTE

Full-Time Equivalent counts part-time teachers proportionally. One full-time teacher = 1.0 FTE; two half-time teachers also = 1.0 FTE. This is the standard federal reporting unit.

Pupil : Teacher ratio

NCES-reported ratio divides total enrollment by teacher FTE. It is NOT the same as average class size — schools with specialists, coaches, and resource teachers will show lower ratios than typical class sizes.

How to read the trend

A falling pupil:teacher ratio (line going down) means more staffing per student — generally a positive signal. A rising line can indicate budget pressure or fast enrollment growth outpacing hiring. Always compare to the US average (dashed grey).

Historical data spans 20202024 from NCES CCD.

Student Support & Wellbeing

Non-teaching staff who support student mental health, physical health, and behavioural needs. Lower pupil-to-staff ratios mean more one-on-one access.

Counselors & Social Workers — staff to pupils (recommended 1:250)

1:01:2591:5191:7781:1,0371:1,2972015201720201:3951:3391:3431:1,1861:1,1861:1,201Counselor : PupilsSocial Worker : PupilsRecommended 1:250

Nurses & Psychologists — staff to pupils

1:01:2591:5191:7781:1,0371:1,2972015201720201:7911:7911:1,2011:1,1861:1,1861:1,201Nurse : PupilsNASN 1:750Psychologist : PupilsNASP 1:500

Support staffing & ratios — year by year

Metric201520172020Nat Avg
Counselors (FTE)677
Nurses (FTE)332
Psychologists (FTE)222
Social Workers (FTE)222
Counselor : Pupils1:3951:3391:3431:250
Nurse : Pupils1:7911:7911:1,2011:750
Psychologist : Pupils1:1,1861:1,1861:1,2011:500
Social Worker : Pupils1:1,1861:1,1861:1,2011:250

Why these ratios matter

Counselors (ASCA 250:1)

School counselors support academic planning, college & career readiness, and social-emotional wellbeing. The American School Counselor Association recommends no more than 250 students per counselor.

Nurses (NASN 750:1)

School nurses manage chronic conditions, medications, immunisations, and emergencies. The National Association of School Nurses recommends at least 1 full-time nurse per 750 students (more for high-need populations).

Psychologists (NASP 500:1)

School psychologists assess learning & behavioural needs, run mental-health interventions, and coordinate special-education services. NASP recommends 500:1 or lower.

Social workers (SSWAA 250:1)

School social workers bridge home-school relationships, address attendance & trauma, and connect families to community resources. SSWAA recommends 250:1.

Source: US Dept of Education CRDC (20152020) — Civil Rights Data Collection.