# Los Osos High

*Machine-readable school profile — served at https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/llm*

Full profile (human-readable): https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga

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## Core identification
- **NCES School ID**: `060816010605`
- **School name**: Los Osos High
- **Location**: Rancho Cucamonga, CA 91737
- **Address**: 6001 Milliken Ave.
- **District**: Chaffey Joint Union High (LEAID `0608160`)
- **Sector**: Public
- **School type**: Regular
- **School level**: High
- **Grade range**: 9–12
- **Coordinates**: 34.14500, -117.55590
- **Phone**: (909)477-6900
- **Website**: https://www.cjuhsd.net
- **Wikidata QID**: Q6683040 — Wikipedia: https://en.wikipedia.org/wiki/Los_Osos_High_School
- **Founded**: 2002

## Enrollment (2024)
- **Students**: 2,759
- **Teachers (FTE)**: 107
- **Student-teacher ratio**: 25.8:1
- **Free/reduced lunch**: 43.7%

## State accountability rating
- **System**: CA Dashboard
- **Year**: 2024
- **Overall rating**: Yellow
- **Indicators**:
  - elpi: Yellow
  - math: Yellow
  - college_career: Green
  - ela: Blue
  - graduation: Blue

## Academic performance (state assessments)
### 2024
- **ELA (CA SBAC)**: 72.1% proficient — 642 tested
- **ELA (CA SBAC) colour-derived**: 80.0% proficient
- **Math (CA SBAC)**: 52.0% proficient

## Graduation rates
- **2024**: 95.5% (cohort of 734)
- **2021**: 95.0% (cohort of 790)

## SAT/ACT participation (2020)
- **SAT/ACT takers**: 39

## Attendance
- **2020**: chronic absence 45.4% (1,342 students) [source: crdc_2020]
- **2020**: chronic absence 2.5% (68 students) [source: crdc]
- **2017**: chronic absence 0.5% (14 students) [source: crdc]

## Discipline (latest CRDC year)
- **Year**: 2020
- **In-school suspensions**: 0
- **Out-of-school suspensions**: 0
- **Expulsions**: 0

## Demographics (2023)
- **White**: 0.5%
- **Hispanic/Latino**: 37.4%
- **Black/African American**: 21.3%
- **Asian**: 6.1%
- **American Indian/Alaska Native**: 31.6%
- **Pacific Islander**: 0.5%
- **Two or more races**: 2.7%
- **Free/reduced lunch eligible**: 34.4%

## Inclusion — IDEA & English Learners (2020)
- **Students with IEP (IDEA)**: 9.6% — 264 students
- **English Learners**: 3.4% — 93 students

## Disability category breakdown (CRDC)
- **Specific Learning Disability**: 143 students
- **Other Health Impairment**: 71 students
- **Autism**: 44 students
- **Emotional Disturbance**: 16 students
- **Intellectual Disability**: 15 students
- **Multiple Disabilities**: 10 students
- **Speech/Language Impairment**: 10 students
- **Hearing Impairment**: 3 students
- **Orthopedic Impairment**: 1 students
- **Visual Impairment**: 1 students

## Programs & enrichment
- Advanced Placement (AP)

## Finance
### School-level (ESSA 2023-24)
- **Total per-pupil expenditure**: $16,863
- **Federal share**: $798
- **State + local share**: $16,065
- **Enrolled for PPE calc**: 2,759
### District F-33 (2022)
- **District per-pupil revenue**: $19,233,811
- **Federal share**: 11.2%
- **State share**: 52.9%
- **Local share**: 35.9%
- **Instructional spending per pupil**: $9,860,307

## Neighbourhood (ACS 2019-2023)
- **Median household income**: $147,247
- **Poverty rate**: 4.1%
- **Bachelor's degree or higher**: 48.4%
- **Unemployment**: 6.1%
- **Median gross rent**: $3,051
- **Foreign-born residents**: 17.3%
- **Single-parent households**: 10.7%

## Environmental context
- **Nearest Superfund (NPL)**: 8.0 miles (ROCKETS FIREWORKS AND FLARES SITE)
- **Toxic Release Inventory sites within 1 mile**: 1
- **TRI sites within 5 miles**: 47
- **Nearest brownfield**: 10.88 miles (CITY WAREHOUSE)

### Water safety
- **Public water system**: CUCAMONGA VALLEY WATER DISTRICT
- **SDWA health violations (10 yr)**: 0
- **Acute violations (10 yr)**: 0

### Air quality
- **PM2.5 annual average**: 13.5992 μg/m³ (EPA std: 9)
- **Nearest monitor**: 4.8 miles

## Nearby schools performing better

### chronic absence
- **Rancho Cucamonga High** — 1.1 mi away, 2.12% (this school: 2.46%)
- **Etiwanda High** — 2.8 mi away, 0.88% (this school: 2.46%)
- **Alta Loma High** — 3.5 mi away, 1.71% (this school: 2.46%)
- **Chaffey Community Day** — 5.1 mi away, 0% (this school: 2.46%)
- **Summit High** — 5.2 mi away, 0.19% (this school: 2.46%)

### ela proficiency
- **Bonita High** — 12.3 mi away, 77.95% (this school: 76.05%)
- **Middle College High** — 14.5 mi away, 77.4% (this school: 76.05%)

### graduation rate
- **Henry J. Kaiser High** — 7.5 mi away, 95.9% (this school: 95.5%)
- **Claremont High** — 9.7 mi away, 98.3% (this school: 95.5%)
- **Patriot High** — 11.2 mi away, 96.6% (this school: 95.5%)
- **Bonita High** — 12.3 mi away, 96.6% (this school: 95.5%)
- **School of Arts and Enterprise** — 12.6 mi away, 96.2% (this school: 95.5%)

### math proficiency
- **Caryn Elementary** — 0.4 mi away, 66% (this school: 52%)
- **Banyan Elementary** — 0.7 mi away, 80% (this school: 52%)
- **Victoria Groves Elementary** — 1.2 mi away, 80% (this school: 52%)
- **Carleton P. Lightfoot Elementary** — 1.2 mi away, 80% (this school: 52%)
- **John L. Golden Elementary** — 1.3 mi away, 80% (this school: 52%)

## Related data feeds
- **Profile (human)**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga
- **Performance**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/performance
- **Finance**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/finance
- **Demographics**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/demographics
- **Inclusion**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/inclusion
- **Context (neighbourhood)**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/context
- **Attendance**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/attendance
- **Discipline**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/discipline
- **Outcomes**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/outcomes
- **Workforce**: https://us.ca.whatschool.ai/en/ca/school/los-osos-high-rancho-cucamonga/workforce

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*Source: US Dept of Education CCD, EDFacts, CRDC, F-33; US Census ACS; EPA SDWIS, TRI, NPL, AQS; state DOE portals (CA CDE, TX TEA, FL DOE, NY NYSED, IL ISBE, WA OSPI). Aggregated by WhatSchool.ai.*

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