IllinoisSchoolsGlenbrook North High School

Glenbrook North High School

PublicRegular
Northbrook, Illinois · Glenbrook HSD 225
Teachers162.0FTE
Ratio12.8:1students per teacher
Students2,077enrolled
SCHOOL SNAPSHOT
Students2,077
Grade Span9–12
Student:Teacher12.8:1
Free/Reduced Lunch
Title INo
SectorPublic
Student : Teacher
13.1:1
2.3%vs prior yrUS avg 15.4:1
Teacher FTE
161
0.6%vs prior yr
Enrollment
2,111
1.6%vs prior yr
Years of Data
5
2020–2024
Counselors
1:225
11.8%vs prior yrASCA max 1:250
Nurses
1:1,013
0.7%vs prior yrNASN max 1:750
Psychologists
1:405
20.6%vs prior yrNASP max 1:500
Social Workers
1:675
33.8%vs prior yrSSWAA max 1:250
Trends & 5-year history below

Pupil : Teacher Ratio — 5-Year Trend

12.6:113.2:113.8:114.4:115.0:115.6:12020202120222023202413.0:113.7:112.8:113.1:1This schoolUS public-school avg

Enrollment & Teacher FTE

2,0182,0382,0582,0782,0982,118149152155157160163202020212022202320242,0252,0522,0622,0772,111158150162161EnrollmentTeacher FTE

Year-by-year workforce

Metric20202021202220232024Nat Avg
Enrollment2,0252,0522,0622,0772,111
Teacher FTE158150162161
Pupil : Teacher ratio13.0:113.7:112.8:113.1:115.4:1

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)

1:01:2201:4411:6611:8811:1,102201720201:2551:2251:1,0201:675Counselor : PupilsSocial Worker : PupilsRecommended 1:250

Nurses & Psychologists — staff to pupils

1:01:2201:4411:6611:8811:1,102201720201:1,0201:1,0131:5101:405Nurse : PupilsNASN 1:750Psychologist : PupilsNASP 1:500

Support staffing & ratios — year by year

Metric20172020Nat Avg
Counselors (FTE)89
Nurses (FTE)22
Psychologists (FTE)45
Social Workers (FTE)23
Counselor : Pupils1:2551:2251:250
Nurse : Pupils1:1,0201:1,0131:750
Psychologist : Pupils1:5101:4051:500
Social Worker : Pupils1:1,0201:6751:250

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 (20172020) — Civil Rights Data Collection.