CaliforniaSchoolsArroyo High

Arroyo High

PublicRegular
San Lorenzo, California · San Lorenzo Unified
Teachers61.0FTE
Ratio25.3:1students per teacher
Students1,542enrolled
SCHOOL SNAPSHOT
Students1,542
Grade Span9–12
Student:Teacher25.3:1
Free/Reduced Lunch69%
Title INo
SectorPublic
Student : Teacher
25.0:1
1.2%vs prior yrUS avg 15.4:1
Teacher FTE
60
1.6%vs prior yr
Enrollment
1,499
2.8%vs prior yr
Years of Data
5
2020–2024
Counselors
1:443
1.3%vs prior yrASCA max 1:250
Nurses
NASN max 1:750
Psychologists
NASP max 1:500
Social Workers
SSWAA max 1:250
Trends & 5-year history below

Pupil : Teacher Ratio — 5-Year Trend

14.5:117.1:119.6:122.2:124.7:127.3:12020202120222023202426.1:126.4:125.3:125.0:1Arroyo HighUS public-school avg

Enrollment & Teacher FTE

1,4771,5401,6041,6671,7311,794596163656769202020212022202320241,7721,6901,6101,5421,49968616160EnrollmentTeacher FTE

Year-by-year workforce

Metric20202021202220232024Nat Avg
Enrollment1,7721,6901,6101,5421,499
Teacher FTE68616160
Pupil : Teacher ratio26.1:126.4:125.3:125.0:115.4:1

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)

1:01:1,8901:3,7801:5,6701:7,5601:9,4502015201720201:4381:4381:4431:7,0001:8,750Counselor : PupilsSocial Worker : PupilsRecommended 1:250

Nurses & Psychologists — staff to pupils

1:01:2,9081:5,8151:8,7231:11,6311:14,5382015201720201:13,4621:4,3751:2,9171:1,591Nurse : PupilsNASN 1:750Psychologist : PupilsNASP 1:500

Support staffing & ratios — year by year

Metric201520172020Nat Avg
Counselors (FTE)444
Nurses (FTE)0.10.40
Psychologists (FTE)0.61.10
Social Workers (FTE)0.30.20
Counselor : Pupils1:4381:4381:4431:250
Nurse : Pupils1:13,4621:4,3751:750
Psychologist : Pupils1:2,9171:1,5911:500
Social Worker : Pupils1:7,0001:8,7501:250

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.