How does Cosumnes Oaks High compare to other high schools in Elk Grove?

Cosumnes Oaks High has a SchoolScope composite score of 63.3/100, placing it at the 82nd percentile statewide. 26% of students exceed standard, with a total of 945 students tested across grades and subjects.

What percentage of students exceed standards at Cosumnes Oaks High?

26.4% of students at Cosumnes Oaks High exceed the state standard on CAASPP assessments, while 54.1% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

What is the chronic absenteeism rate at Cosumnes Oaks High?

14.4% of students at Cosumnes Oaks High are chronically absent (missing 10% or more of school days). This metric reflects school culture and family engagement, and is weighted at 15% in our composite score.

Cosumnes Oaks High

High School

Elk Grove Unified Elk GroveSacramento County95757

📍 8350 Lotz Parkway

Composite Score

out of 100

State Percentile

of high schools

State Rank

of 1,739 California high schools

🌱

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Composite 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

2,151 students

Student-Teacher Ratio

22:1

Free/Reduced Lunch

34%

Teachers

97 full-time

College & career readiness

Graduation Rate

96.5%

AP Exam Prepared

56.0%

A-G Completion

66.3%

College-Going Rate

82.5%

Data source: California Department of Education — ACGR, CCI, CGR reports

Dashboard indicators

ELA Year-over-Year

Declined

-4.7 pts DFS change

Math Year-over-Year

Maintained

-0.3 pts DFS change

EL Proficiency (ELPAC)

25.9%

English learners at Level 4 (Well Developed) · 85 tested

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic20.4%

White14.6%

Asian28.5%

Black12.0%

Other24.5%

Performance breakdown

Performance breakdown for Cosumnes Oaks High
Category	Percentage
Exceeded Standard	26.4%
Met Standard	27.7%
Below Standard	45.9%

What other rankings don't show you

Most rating sites report "54% proficient" for Cosumnes Oaks High and stop there. Here's what that number hides:

26.4% of students exceeded standard while 27.7% met it. That exceeded rate is 10.9 points above the state average of 15.5%. That's 3.4 points above the Elk Grove Unified district average of 23.0%. Compared to the 4 nearby schools within ~3 miles, this exceeded rate is 10.0 points higher (vs 16.5% average). The gap between "met" and "exceeded" can reveal how much a school's curriculum challenges students beyond proficiency.

The graduation rate is 96.5% — above the state target. 66.3% of students complete A-G requirements for UC/CSU eligibility — a strong college readiness signal. 82.5% of graduates go on to college within a year.

Chronic absenteeism is 14.4%, better than the state average of 34.0%.

Why the exceeded vs. met split matters →

Key metrics

% Exceeded Standard

26.4%

Students scoring above proficient

% Met or Above

54.1%

Students meeting standard

Chronic Absenteeism

14.4%

Students missing 10%+ of days

Suspension Rate

3.8%

Students suspended at least once

Total Tested

945

Across all grades & subjects

ELA scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
11th	474	34.6%	31.2%	19.0%	15.2%	65.8%

Math scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
11th	471	18.3%	24.2%	24.6%	32.9%	42.5%

K-12 Feeder PathBoundary data

Elementary

Elliott Ranch Elementary

62.987th pctile

Franklin Elementary

57.279th pctile

Also serves area

Zehnder Ranch Elementary

64.989th pctile

Miwok Village Elementary

61.785th pctile

Arlene Hein Elementary

54.575th pctile

▼

Middle

Elizabeth Pinkerton Middle

No score

▼

High School

Cosumnes Oaks High

63.382nd pctile

This school

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