How does CBK Charter compare to other high schools in Riverside?

CBK Charter has a Scope Score of 21.2/100, ranked #1418 among California high schools. 2% of students exceed standard, with a total of 342 students tested across grades and subjects.

What percentage of students exceed standards at CBK Charter?

2.3% of students at CBK Charter exceed the state standard on CAASPP assessments, while 15.5% 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 CBK Charter?

33.1% of students at CBK Charter 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.

CBK Charter

High School

Riverside County Office of Education RiversideRiverside County92501Charter School

📍 3939 13th Street

Charter school — publicly funded but independently operated. Enrollment is open to all students regardless of neighborhood, typically through a lottery process. Charter schools have more flexibility in curriculum and operations but must meet state academic standards.

Scope Score

out of 100

State Rank

of 1,649 California high schools

🌱

Building Momentum

Every school has strengths the data doesn’t fully capture. Visit and see for yourself.

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

601 students

Student-Teacher Ratio

27:1

Free/Reduced Lunch

65%

Teachers

22 full-time

College & career readiness

Graduation Rate

50.0%

AP Exam Prepared

Not offered

This school may not offer AP courses

A-G Completion

0.0%

This school may not offer A-G courses

College-Going Rate

22.5%

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

Dashboard indicators

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

ELA Year-over-Year

Increased

+12.6 pts DFS change

Math Year-over-Year

Increased

+11.5 pts DFS change

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic75.9%

White11.5%

Asian0.3%

Black7.5%

Other4.8%

Performance breakdown

Performance breakdown for CBK Charter
Category	Percentage
Exceeded Standard	2.3%
Met Standard	13.2%
Below Standard	84.5%

Score Factors

Helping

✓Chronic absenteeism: 33.1%

1.2pp below state avg (state avg 34.3%)

10% weight

✓Suspension rate: 0.0%

4.1pp below state avg (state avg 4.1%)

5% weight

Holding Back

▼Graduation rate: 50.0%

37.4pp below state avg (state avg 87.4%)

25% weight

▼Exceeded standard: 2.3%

13.4pp below state avg (state avg 15.7%)

20% weight

▼College readiness: 0.0%

AP exam pass rate below state avg (state avg 35.3%)

20% weight

▼Met or exceeded: 15.5%

19.3pp below state avg (state avg 34.8%)

15% weight

▼Baseline proficiency: 15.5%

Below state baseline (state avg 34.8%)

5% 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 high school Scope Score is weighted across 7 dimensions. See full methodology →

What other rankings don't show you

Most rating sites report "16% proficient" for CBK Charter and stop there. Here's what that number hides:

2.3% of students exceeded standard while 13.2% met it. That exceeded rate is 13.4 points below the state average of 15.7%. That's near the Riverside County Office of Education district average of 3.0%. The 4 nearby schools within ~3 miles average 9.8% exceeded — 7.5 points higher. The gap between "met" and "exceeded" can reveal how much a school's curriculum challenges students beyond proficiency.

The graduation rate is 50.0%. 22.5% of graduates go on to college within a year.

Chronic absenteeism is 33.1%, better than the state average of 34.3%.

Why the exceeded vs. met split matters →

A low score doesn't tell the whole story. Read: Your School Scored Low — Here's What That Actually Means

How to get into a charter school in LA →

Key metrics

% Exceeded Standard

2.3%

Students scoring above proficient

% Met or Above

15.5%

Students meeting standard

Chronic Absenteeism

33.1%

Students missing 10%+ of days

Suspension Rate

0.0%

Students suspended at least once

Total Tested

342

Across all grades & subjects

ELA scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
11th	171	4.7%	23.4%	26.9%	45.0%	28.1%

Math scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
11th	171	0.0%	2.9%	8.2%	88.9%	2.9%

Estimated K-12 PathEstimate

Elementary

Riverside County Juvenile…

No score

→

Middle

Riverside County Juvenile…

No score

→

High

CBK Charter

21.2

This school

Estimated K-12 path based on district and proximity. Actual attendance zones may differ. Contact your school district for official feeder information.