Enrollment
494
California · 2024-25 NCES data
Middle school (grades 6-8) · Los Osos, CA
Los Osos Middle
Federal NCES profile for Los Osos Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 19/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063480005873
👥 S:T ratio 27
🌟 Gifted program 30
🎓 Counselors 1
📋 Attendance 18
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Los Osos Middle earns 19/100 on the Resource Investment Index, even as it posts class sizes smaller than 77% of California schools.
- #3 of 3
- public schools in Los Osos · Resource Index
- 19
- Resource Index · Lower
- 18.3:1
- small classes for California
- 38.2%
- free-lunch eligible
Los Osos Middle has class sizes smaller than 77% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Los Osos Middle ranks #3 of 3 public schools in Los Osos, CA.
School address
District: San Luis Coastal Unified · California
NCES ID 063480005873 Verify on NCES CCD record →
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
18.3:1
vs 21.5:1 California avg
-15% vs state
Free-lunch eligible
38.2%
vs 55.5% California avg
-31% vs state
Student-teacher ratio in context
How Los Osos Middle compares with California and U.S. medians
What stands out at Los Osos Middle
Los Osos Middle is a mid-sized middle school in Los Osos, California, enrolling 494 students.
Class sizes run a bit leaner than typical: 18.3:1 puts it in the smaller third of California schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 38.2% of students eligible for free meals.
With 494 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 1,305 similarly sized, similarly resourced-need California schools statewide, it ranks #1,081, in the lower tier once campus size and economic need are matched.
Its student body is led by White (62%) and Hispanic or Latino (24%) (diversity index 55/100).
Counselor access is stretched at roughly 494 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 32.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
San Luis Coastal Unified also operates San Luis Obispo High (1,678 students) and Laguna Middle (780 students) alongside Los Osos Middle.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Los Osos Middle compares
Los Osos Middle on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.3:1 | ▼ 15% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 38.2% | ▼ 31% | 55.5% | 51.7% |
| Enrollment | 494 | top 46% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.3:1
Leaner classes than 23% of US schools, heavier class loads than most.
494
Bigger than 61% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
38.2%
free-lunch eligible
- 31% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.3:1
students per teacher
- 15% below state mean
Top 23% in California - lower ratio than 77% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
32.6%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,712
per pupil, district-wide
- above California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 494 students, the combined health-and-guidance staffing load for this school.
Discipline context
4
in-school suspensions + 20 out-of-school
Suspension rate: 0.8 per 100 students. Combined in-school and out-of-school rate: 4.9 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 61.7%
Hispanic or Latino 23.5%
Two or More 7.9%
Asian 6.1%
African American 0.4%
American Indian / Alaska Native 0.4%
Largest group: White at 61.7% of enrollment.
Student-body diversity index 55.4/100
Simpson diversity index - at 55.4, Los Osos Middle is more mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for San Luis Coastal Unified, which includes Los Osos Middle.
$16,712
Per student
+1%
vs California
Avg $16,509
+1%
vs U.S.
Avg $16,593
Revenue mix
Local 77.4%
State 16.0%
Federal 6.7%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Los Osos Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| San Luis Obispo High | Larger | Lower economic need | Higher S:T ratio |
| Laguna Middle | Larger | Lower economic need | Higher S:T ratio |
| Morro Bay High | Larger | Similar economic need | Lower S:T ratio |
| C L Smith Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Los Ranchos Elementary | Similar size | Lower economic need | Higher S:T ratio |
Comparisons are relative to Los Osos Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,678
- Students per teacher
- 21.5:1
- Resource Index
- 24/100
- Enrollment
- 780
- Students per teacher
- 20:1
- Resource Index
- 27/100
- Enrollment
- 751
- Students per teacher
- 16.7:1
- Resource Index
- 24/100
- Enrollment
- 528
- Students per teacher
- 24:1
- Resource Index
- 16/100
- Enrollment
- 521
- Students per teacher
- 27.4:1
- Resource Index
- 22/100
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~494 students)
Similar student-teacher ratio (~18.3:1)
Next steps
Verify locally before acting on Los Osos Middle's federal record.
- Compare Los Osos Middle against another school. Compare schools
- San Luis Coastal Unified's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Los Osos Middle
How many students attend Los Osos Middle?
Los Osos Middle has 494 students enrolled. It is a middle school in Los Osos, CA.
What is the student-teacher ratio at Los Osos Middle?
The student-teacher ratio at Los Osos Middle is 18.3:1, which is 15% lower than the California average of 21.5:1 and 17% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Los Osos Middle?
38.2% of students at Los Osos Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Los Osos Middle?
The largest demographic group at Los Osos Middle is White at 61.7% of enrollment, in Los Osos, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.4/100.
What is the Resource Investment Index for Los Osos Middle?
Los Osos Middle has a Resource Investment Index of 19/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Los Osos Middle rank among public schools in Los Osos?
By Resource Investment Index, Los Osos Middle ranks #3 of 3 public schools in Los Osos, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Los Osos on the city page.
Is Los Osos Middle a good school?
Los Osos Middle earns 19/100 on the Resource Investment Index, even as it posts class sizes smaller than 77% of California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in San Luis Coastal Unified?
Besides Los Osos Middle, San Luis Coastal Unified also operates San Luis Obispo High (1,678 students), Laguna Middle (780 students), and Morro Bay High (751 students). See the San Luis Coastal Unified district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.