How does Los Osos Middle compare to other middle schools in Los Osos?

Los Osos Middle has a Scope Score of 58.6/100, ranked #645 among California middle schools. 31% of students exceed standard, with a total of 947 students tested across grades and subjects.

What percentage of students exceed standards at Los Osos Middle?

30.5% of students at Los Osos Middle exceed the state standard on CAASPP assessments, while 60.3% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

Is Los Osos Middle improving or declining?

Based on CAASPP data, Los Osos Middle's proficiency rate decreases by 9.4 percentage points from Grade 6 to grade 8 growth. This pattern in test scores may reflect a variety of factors beyond the school itself.

What is the chronic absenteeism rate at Los Osos Middle?

24.6% of students at Los Osos Middle are chronically absent (missing 10% or more of school days). This metric reflects school culture and family engagement, and is weighted at 15% in the Scope Score.

Los Osos Middle

Middle School

San Luis Coastal Unified Los OsosSan Luis Obispo County93402

📍 1555 El Moro Street

Scope Score

out of 100

State Rank

of 1,714 California middle schools

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Building Momentum

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Scope Scores are SchoolScope's analysis of public data from the California Dept. of Education (CAASPP, chronic absenteeism, suspension rates). They are not official CDE ratings and should not be the sole basis for school decisions. See methodology.

School overview

Enrollment

486 students

Student-Teacher Ratio

18:1

Free/Reduced Lunch

55%

Teachers

27 full-time

Dashboard indicators

How this school's scores changed from last year to this year

ELA Year-over-Year

Increased

+5.0 pts DFS change

Math Year-over-Year

Increased

+11.7 pts DFS change

EL Proficiency (ELPAC)

35.3%

English learners at Level 4 (Well Developed) · 17 tested

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic25.9%

White59.5%

Asian1.0%

Black0.4%

Other13.2%

Performance breakdown

Performance breakdown for Los Osos Middle
Category	Percentage
Exceeded Standard	30.5%
Met Standard	29.8%
Below Standard	39.7%

Score Factors

Helping

✓Exceeded standard: 30.5%

13.2pp above state avg (state avg 17.3%)

30% weight

✓Met or exceeded: 60.3%

20.8pp above state avg (state avg 39.5%)

20% weight

✓Baseline proficiency: 60.3%

Above state baseline (state avg 39.5%)

10% weight

Holding Back

▼Growth (G6→G8): -9.4pp

Scores decline across grades (state avg +0.8pp)

15% weight

▼Chronic absenteeism: 24.6%

5.3pp above state avg (state avg 19.3%)

15% weight

▼Suspension rate: 5.8%

1.7pp above state avg (state avg 4.1%)

10% weight

Unlike traditional school ratings, we show our work. Every factor, its weight, and how this school compares to the state average — so you can decide what matters most to your family. The middle school Scope Score is weighted across 6 dimensions. See full methodology →

What other rankings don't show you

Most rating sites report "60% proficient" for Los Osos Middle and stop there. Here's what that number hides:

30.5% of students exceeded standard while 29.8% met it. That exceeded rate is 13.2 points above the state average of 17.3%. That's near the San Luis Coastal Unified district average of 30.9%. The gap between "met" and "exceeded" can reveal how much a school's curriculum challenges students beyond proficiency.

Proficiency drops by 9.4 percentage points from Grade 6 to grade 8 growth — a signal that the school may not be sustaining early gains.

California's Dashboard shows ELA performance increased and Math increased year-over-year. 35.3% of English learners reached Level 4 (Well Developed) on ELPAC.

Chronic absenteeism is 24.6%, above the state average of 19.3%.

Why the exceeded vs. met split matters →

Key metrics

% Exceeded Standard

30.5%

Students scoring above proficient

% Met or Above

60.3%

Students meeting standard

Growth (G6→G8)

-9.4pp

Change in proficiency rate

Chronic Absenteeism

24.6%

Students missing 10%+ of days

Suspension Rate

5.8%

Students suspended at least once

Total Tested

947

Across all grades & subjects

Grade trajectory

How proficiency compares across grade levels this year (different students, same test year)

ELA Trajectory

G6 → G7 → G8

Math Trajectory

G6 → G7 → G8

ELA scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
6th	133	28.6%	41.4%	18.1%	12.0%	69.9%
7th	167	34.1%	35.3%	16.2%	14.4%	69.5%
8th	175	29.7%	33.7%	20.6%	16.0%	63.4%

Math scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
6th	134	35.1%	24.6%	17.9%	22.4%	59.7%
7th	167	29.3%	22.8%	24.6%	23.4%	52.1%
8th	171	26.3%	21.1%	20.5%	32.2%	47.4%

K-12 Feeder PathBoundary data

Elementary

Baywood Elementary

73.3# in state

Monarch Grove Elementary

Also serves area

▼

Middle

Los Osos Middle

58.6# in state

This school

▼

High School

Morro Bay High

76.5# in state

Feeder patterns derived from 2015-16 NCES attendance boundary data. Boundaries may have changed. Contact your school district for current information.