How does Cobblestone Elementary compare to other elementary schools in Plumas Lake?

Cobblestone Elementary has a SchoolScope composite score of 45.1/100, placing it at the 54th percentile statewide. 21% of students exceed standard, with a total of 1,120 students tested across grades and subjects.

What percentage of students exceed standards at Cobblestone Elementary?

20.6% of students at Cobblestone Elementary exceed the state standard on CAASPP assessments, while 45.6% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

Is Cobblestone Elementary improving or declining?

Cobblestone Elementary's proficiency rate decreases by 13.1 percentage points from grade 3 to grade 5, suggesting the school is not sustaining early academic gains.

What is the chronic absenteeism rate at Cobblestone Elementary?

5.9% of students at Cobblestone Elementary 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.

Cobblestone Elementary

Plumas Lake Elementary Plumas Lake Yuba County 95961

Composite Score

out of 100

State Percentile

of elementary schools

State Rank

1,120 students tested

School overview

Enrollment

571 students

Student-Teacher Ratio

22:1

Free/Reduced Lunch

42%

Teachers

26 full-time

Student demographics

Hispanic 33.8%

White 34.3%

Asian 10.5%

Black 4.5%

Other 16.8%

Performance breakdown

Performance breakdown for Cobblestone Elementary
Category	Percentage
Exceeded Standard	20.6%
Met Standard	25.0%
Below Standard	54.4%

Exceeded

20.6%

Met

25.0%

Below

54.4%

What other rankings don't show you

Most rating sites report "46% proficient" for Cobblestone Elementary and stop there. Here's what that number hides:

20.6% of students exceeded standard while 25.0% merely met it. That exceeded rate is near the state average of 21.0%. That's near the Plumas Lake Elementary district average of 21.9%. The 1 nearby schools within ~3 miles average 23.3% exceeded — 2.7 points higher. The gap between "met" and "exceeded" is the difference between a school that clears the bar and one that raises it.

Proficiency drops by 13.1 percentage points from grade 3 to grade 5 — a signal that the school may not be sustaining early gains.

Chronic absenteeism is 5.9%, better than the state average of 18.7%.

Key metrics

% Exceeded Standard

20.6%

Students scoring above proficient

% Met or Above

45.6%

Students meeting standard

Growth (G3→G5)

-13.1pp

Change in proficiency rate

Chronic Absenteeism

5.9%

Students missing 10%+ of days

Suspension Rate

5.3%

Students suspended at least once

Total Tested

1,120

Across all grades & subjects

ELA scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
3rd	84	25.0%	28.6%	20.2%	26.2%	53.6%
4th	90	27.8%	17.8%	23.3%	31.1%	45.6%
5th	106	18.9%	32.1%	21.7%	27.4%	50.9%

Math scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
3rd	84	23.8%	26.2%	27.4%	22.6%	50.0%
4th	90	22.2%	25.6%	32.2%	20.0%	47.8%
5th	106	6.6%	19.8%	30.2%	43.4%	26.4%

Nearby schools

1 schools within ~3 miles · avg composite 48.8

Rio Del Oro Elementary

Plumas Lake Elementary · 0.7 mi

48.8

All schools in Plumas Lake →

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