school profile

Los Osos High

Located in Rancho Cucamonga, CA. Serving grades 09 through 12.

NCES ID
060816010605
District
Chaffey Joint Union High
Compare
Enrollment
2,759
Grades
09 through 12
Year
—
Measures
0
Suppressed
0
This school enrolls 2,759 students.

Academic Performance

Percent of students meeting or exceeding state standards, by grade.

No academic proficiency data available.

Community Context

School

Enrollment2,759
Grades served09–12

District

Chaffey Joint Union High
Per-pupil expenditure$16,706
Federal revenue share7.5%
State revenue share57.5%
Local revenue share35.0%
Chronic absenteeism rate27.5%
Graduation rate (ACGR)95.0%

County

Median household income$82,184
Adults with a bachelor's degree or higher22.9%
Median home value$475,000
Unemployment rate5.1%
County figures reflect the surrounding county; district figures reflect the parent school district; school figures reflect this school. All values are officially reported public data.

School Context

Officially reported figures, 2024-25.

Enrollment
2,759
Grades
09–12
Student body
Hispanic 41%Black 6%White 27%Asian 22%Two+ 4%Am. Indian / AK Native 0%Hawaiian / Pac. Isl. 0%

Detailed Reported Data

All reported measures, by topic.

Academic opportunity & advanced coursework
Advanced Mathematics
Advanced mathematics classes offered24
Advanced mathematics enrollment663
Hispanic 188 · Am. Indian / AK Native 3 · Asian 234 · Hawaiian / Pac. Isl. 3 · Black 22 · White 196 · Two+ 17 | Male 311 · Female 352 | English learners 22 | Students w/ disabilities (IDEA) 7
Advanced Placement (AP)
AP computer science enrollment35
Hispanic 3 · Asian 26 · Black 1 · White 2 · Two+ 3 | Male 22 · Female 13
AP computer science enrollment, offeredYes
AP courses offered17
AP enrollment925
Hispanic 238 · Am. Indian / AK Native 3 · Asian 368 · Hawaiian / Pac. Isl. 4 · Black 37 · White 247 · Two+ 28 | Male 411 · Female 514 | English learners 29 | Students w/ disabilities (IDEA) 5 · Students w/ disabilities (504) 10
AP enrollment, offeredYes
AP mathematics enrollment207
Hispanic 45 · Asian 102 · Hawaiian / Pac. Isl. 1 · Black 6 · White 49 · Two+ 4 | Male 92 · Female 115 | English learners 5 | Students w/ disabilities (IDEA) 1
AP mathematics enrollment, offeredYes
AP science enrollment311
Hispanic 54 · Am. Indian / AK Native 1 · Asian 183 · Hawaiian / Pac. Isl. 1 · Black 3 · White 60 · Two+ 9 | Male 145 · Female 166 | English learners 10 | Students w/ disabilities (IDEA) 2
AP science enrollment, offeredYes
AP self-selection (no exam taken)Yes
Algebra I
Algebra I classes offered16
Algebra I enrollment, grades 11-123
Hispanic 1 · Black 1 · Two+ 1 | Male 1 · Female 2 | Students w/ disabilities (IDEA) 1
Algebra I enrollment, grades 9-10460
Hispanic 220 · Am. Indian / AK Native 2 · Asian 56 · Black 35 · White 134 · Two+ 13 | Male 241 · Female 219 | English learners 22 | Students w/ disabilities (IDEA) 55
Students who passed Algebra I, grades 11-120
Students who passed Algebra I, grades 9-10307
Hispanic 145 · Am. Indian / AK Native 2 · Asian 43 · Black 23 · White 85 · Two+ 9 | Male 162 · Female 145 | English learners 18 | Students w/ disabilities (IDEA) 30
Algebra II
Algebra II classes offered18
Algebra II enrollment524
Hispanic 177 · Am. Indian / AK Native 3 · Asian 143 · Hawaiian / Pac. Isl. 3 · Black 25 · White 154 · Two+ 19 | Male 269 · Female 255 | English learners 16 | Students w/ disabilities (IDEA) 14
Geometry
Geometry classes offered22
Geometry enrollment700
Hispanic 293 · Am. Indian / AK Native 4 · Asian 119 · Hawaiian / Pac. Isl. 1 · Black 35 · White 225 · Two+ 23 | Male 338 · Female 362 | English learners 25 | Students w/ disabilities (IDEA) 38
Calculus
Calculus classes offered2
Calculus enrollment49
Hispanic 17 · Asian 10 · Black 1 · White 21 | Male 25 · Female 24 | English learners 1 | Students w/ disabilities (IDEA) 1
Biology
Biology classes offered42
Biology enrollment1,337
Hispanic 572 · Am. Indian / AK Native 3 · Asian 195 · Hawaiian / Pac. Isl. 3 · Black 83 · White 434 · Two+ 47 | Male 674 · Female 663 | English learners 43 | Students w/ disabilities (IDEA) 127
Chemistry
Chemistry classes offered11
Chemistry enrollment343
Hispanic 136 · Am. Indian / AK Native 1 · Asian 71 · Black 25 · White 101 · Two+ 9 | Male 156 · Female 187 | English learners 14 | Students w/ disabilities (IDEA) 6
Physics
Physics classes offered4
Physics enrollment105
Hispanic 37 · Am. Indian / AK Native 1 · Asian 21 · Black 4 · White 40 · Two+ 2 | Male 65 · Female 40 | English learners 5 | Students w/ disabilities (IDEA) 1
Computer Science
Computer Science classes offered0
Dual Enrollment
Dual enrollment60
Hispanic 15 · Asian 12 · Black 6 · White 26 · Two+ 1 | Male 26 · Female 34
International Baccalaureate (IB)
IB enrollment, offeredNo
Gifted and Talented Programs
Gifted and talented program, offeredYes
Gifted/talented enrollment1,284
Hispanic 401 · Am. Indian / AK Native 3 · Asian 401 · Hawaiian / Pac. Isl. 5 · Black 41 · White 396 · Two+ 37 | Male 590 · Female 694 | English learners 12 | Students w/ disabilities (IDEA) 8
SAT and ACT Participation
Students participating in SAT or ACT240
Hispanic 49 · Asian 108 · Hawaiian / Pac. Isl. 1 · Black 7 · White 69 · Two+ 6 | Male 98 · Female 142 | English learners 2 | Students w/ disabilities (IDEA) 1
Students & school setting
Enrollment
English learner enrollment102
Hispanic 28 · Asian 59 · Black 1 · White 13 · Two+ 1 | Male 59 · Female 43
English learner program enrollment102
Hispanic 28 · Asian 59 · Black 1 · White 13 · Two+ 1 | Male 59 · Female 43
Enrollment
Hispanic 1,120 · Asian 597 · Hawaiian / Pac. Isl. 8 · Black 168 · White 869 · Two+ 89 | Male 1,445 · Female 1,419 | English learners 102 | Students w/ disabilities (504) 80
Students with disabilities (IDEA) enrollment
Hispanic 130 · Asian 20 · Black 28 · White 66 · Two+ 8 | Male 169 · Female 83 | English learners 10
Students with disabilities (Section 504) enrollment80
Hispanic 24 · Am. Indian / AK Native 1 · Asian 1 · Hawaiian / Pac. Isl. 1 · Black 2 · White 51 | Male 45 · Female 35
Grade Retention
Students retained, grade 10, offeredNo
Students retained, grade 11, offeredNo
Students retained, grade 1220
Hispanic 9 · Asian 3 · Black 2 · White 6 | Male 14 · Female 6 | English learners 1 | Students w/ disabilities (IDEA) 19
Students retained, grade 12, offeredYes
Students retained, grade 9, offeredNo
Single-Sex Classes
Single-sex classes, offeredNo
Interscholastic Athletics
Athletic participants725
Male 365 · Female 360
Interscholastic athletics, offeredYes
Sports4
Male 2 · Female 2
Teams12
Male 6 · Female 6
Internet Access and Devices
Internet access, Wi-Fi hotspots providedYes
Internet access, Wi-Fi-enabled devices provided2,859
Internet access, devices provided to studentsYes
Internet access, school-issued devicesYes
School Support and Staffing
School counselors (FTE)7
Security staff (FTE), security guards6
Security staff (FTE), sworn law enforcement officers1
Support services staff (FTE), nurses1
Support services staff (FTE), psychologists1
Support services staff (FTE), social workers0
Teachers (FTE), certified teachers85
Teachers (FTE), teachers not certified28
Teachers (FTE), total113
Teachers, current-year113
Male 59 · Female 54
School Characteristics
Grade offered, grade 10Yes
Grade offered, grade 11Yes
Grade offered, grade 12Yes
Grade offered, grade 9Yes
School climate & discipline
Suspensions
Days missed due to out-of-school suspension237
Hispanic 86 · Am. Indian / AK Native 0 · Asian 34 · Hawaiian / Pac. Isl. 0 · Black 33 · White 64 · Two+ 20 | Male 172 · Female 65 | English learners 10 | Students w/ disabilities (IDEA) 69 · Students w/ disabilities (504) 7
In-school suspensions (students with disabilities (IDEA))1
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 1 · Two+ 0 | Male 1 · Female 0
In-school suspensions (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
In-school suspensions (students without disabilities)5
Hispanic 2 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 2 · Two+ 0 | Male 4 · Female 1 | English learners 0
Multiple out-of-school suspensions (students with disabilities (IDEA))4
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 2 · White 2 · Two+ 0 | Male 4 · Female 0
Multiple out-of-school suspensions (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Multiple out-of-school suspensions (students without disabilities)2
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 1 | Male 2 · Female 0 | English learners 0
Out-of-school suspension instances
Sch Oosinstances Wodis 66 · Sch Oosinstances Idea 25 · Sch Oosinstances 504 4
Single out-of-school suspension (students with disabilities (IDEA))21
Hispanic 13 · Am. Indian / AK Native 0 · Asian 1 · Hawaiian / Pac. Isl. 0 · Black 3 · White 4 · Two+ 0 | Male 16 · Female 5
Single out-of-school suspension (students with disabilities)
English learners 0 | Students w/ disabilities (504) 3
Single out-of-school suspension (students without disabilities)63
Hispanic 20 · Am. Indian / AK Native 0 · Asian 14 · Hawaiian / Pac. Isl. 0 · Black 7 · White 18 · Two+ 4 | Male 43 · Female 20 | English learners 4
Expulsions
Expulsions under zero-tolerance policies (students with disabilities (IDEA))1
Hispanic 1 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 1 · Female 0
Expulsions under zero-tolerance policies (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Expulsions under zero-tolerance policies (students without disabilities)0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0
Expulsions with educational services (students with disabilities (IDEA))3
Hispanic 3 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 3 · Female 0
Expulsions with educational services (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Expulsions with educational services (students without disabilities)1
Hispanic 1 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 1 · Female 0 | English learners 0
Expulsions without educational services (students with disabilities (IDEA))0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0
Expulsions without educational services (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Expulsions without educational services (students without disabilities)0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0
Restraint and Seclusion
Instances of restraint or seclusion, mechanical restraint
Sch Rsinstances Mech Wodis 0 · Sch Rsinstances Mech Idea 0 · Sch Rsinstances Mech 504 0
Instances of restraint or seclusion, physical restraint
Sch Rsinstances Phys Wodis 0 · Sch Rsinstances Phys Idea 0 · Sch Rsinstances Phys 504 0
Instances of restraint or seclusion, seclusion
Sch Rsinstances Secl Wodis 0 · Sch Rsinstances Secl Idea 0 · Sch Rsinstances Secl 504 0
Referrals to Law Enforcement and School-Related Arrests
Referrals to law enforcement (students with disabilities (IDEA))2
Hispanic 1 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 0 | Male 1 · Female 1
Referrals to law enforcement (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Referrals to law enforcement (students without disabilities)1
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 0 | Male 0 · Female 1 | English learners 0
School-related arrests (students with disabilities (IDEA))0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0
School-related arrests (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
School-related arrests (students without disabilities)1
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 0 | Male 0 · Female 1 | English learners 0
Allegations of Harassment or Bullying
Allegations of harassment or bullying, on the basis of religion
Sch Hballegations Rel Atag 0 · Sch Hballegations Rel Budd 0 · Sch Hballegations Rel Cath 0 · Sch Hballegations Rel East 0 · Sch Hballegations Rel Hind 0 · Sch Hballegations Rel Islm 0 · Sch Hballegations Rel Jwit 0 · Sch Hballegations Rel Jwsh 0 · Sch Hballegations Rel Morm 0 · Sch Hballegations Rel Multi 0 · Sch Hballegations Rel Othchrn 0 · Sch Hballegations Rel Othrel 0 · Sch Hballegations Rel Prot 0 · Sch Hballegations Rel Sikh 0
Students disciplined for harassment or bullying, on the basis of disability0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Students disciplined for harassment or bullying, on the basis of race, color, or national origin0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Students disciplined for harassment or bullying, on the basis of sex2
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 1 | Male 1 · Female 1 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Students reported harassed or bullied, on the basis of disability0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Students reported harassed or bullied, on the basis of race, color, or national origin0
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 0 · Female 0 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Students reported harassed or bullied, on the basis of sex1
Hispanic 0 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 1 · White 0 · Two+ 0 | Male 0 · Female 1 | English learners 0 | Students w/ disabilities (IDEA) 0 · Students w/ disabilities (504) 0
Offenses
Allegations, physical attack or battery, duty to report — not resolved0
Allegations, physical attack or battery, pending resolution0
Allegations, physical attack or battery, referred but not resulting in disciplinary action0
Allegations, physical attack or battery, reported to a duty to report0
Allegations, physical attack or battery, resulting in disciplinary action0
Allegations, rape or attempted rape, duty to report — not resolved0
Allegations, rape or attempted rape, pending resolution0
Allegations, rape or attempted rape, referred but not resulting in disciplinary action0
Allegations, rape or attempted rape, reported to a duty to report0
Allegations, rape or attempted rape, resulting in disciplinary action0
Firearm use incidents, reportedNo
Homicides, reportedNo
Incidents, physical attack or battery0
Incidents, physical attack with a weapon0
Incidents, physical attack without a weapon10
Incidents, possession of a firearm or explosive device0
Incidents, rape or attempted rape0
Incidents, robbery with a weapon0
Incidents, robbery without a weapon0
Incidents, threats with a weapon0
Incidents, threats without a weapon0
Transfers to Alternative Schools
Transfers to alternative schools (students with disabilities (IDEA))1
Hispanic 1 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 1 · Female 0
Transfers to alternative schools (students with disabilities)
English learners 0 | Students w/ disabilities (504) 0
Transfers to alternative schools (students without disabilities)1
Hispanic 1 · Am. Indian / AK Native 0 · Asian 0 · Hawaiian / Pac. Isl. 0 · Black 0 · White 0 · Two+ 0 | Male 1 · Female 0 | English learners 0
This profile is derived exclusively from publicly available federal and state datasets. It may not reflect the most current information available. We encourage parents and families to supplement this data with information published directly on the school’s website, which may include more recent figures, additional programs, or updated enrollment data.