How does Arroyo Elementary compare to other elementary schools in Ontario?

Arroyo Elementary has a SchoolScope composite score of 39.2/100, placing it at the 36th percentile statewide. 8% of students exceed standard, with a total of 1,276 students tested across grades and subjects.

What percentage of students exceed standards at Arroyo Elementary?

8.3% of students at Arroyo Elementary exceed the state standard on CAASPP assessments, while 31.7% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

Is Arroyo Elementary improving or declining?

Arroyo Elementary's proficiency rate decreases by 6.7 percentage points from grade 3 to grade 5, suggesting the school is not sustaining early academic gains.

What is the chronic absenteeism rate at Arroyo Elementary?

13.6% of students at Arroyo 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.

Arroyo Elementary

Ontario-Montclair Ontario San Bernardino County 91764

Composite Score

out of 100

State Percentile

of elementary schools

State Rank

1,276 students tested

School overview

Enrollment

499 students

Student-Teacher Ratio

22:1

Free/Reduced Lunch

85%

Teachers

23 full-time

Student demographics

Hispanic 88.4%

White 3.2%

Asian 2.4%

Black 1.8%

Other 4.2%

Performance breakdown

Performance breakdown for Arroyo Elementary
Category	Percentage
Exceeded Standard	8.3%
Met Standard	23.4%
Below Standard	68.3%

Exceeded

8.3%

Met

23.4%

Below

68.3%

What other rankings don't show you

Most rating sites report "32% proficient" for Arroyo Elementary and stop there. Here's what that number hides:

8.3% of students exceeded standard while 23.4% merely met it. That exceeded rate is 12.7 points below the state average of 21.0%. That's 9.0 points below the Ontario-Montclair district average of 17.3%. The 23 nearby schools within ~3 miles average 18.3% exceeded — 10.0 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 6.7 percentage points from grade 3 to grade 5 — a signal that the school may not be sustaining early gains.

Chronic absenteeism is 13.6%, better than the state average of 18.7%.

Key metrics

% Exceeded Standard

8.3%

Students scoring above proficient

% Met or Above

31.7%

Students meeting standard

Growth (G3→G5)

-6.7pp

Change in proficiency rate

Chronic Absenteeism

13.6%

Students missing 10%+ of days

Suspension Rate

1.1%

Students suspended at least once

Total Tested

1,276

Across all grades & subjects

ELA scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
3rd	46	6.5%	32.6%	17.4%	43.5%	39.1%
4th	55	10.9%	20.0%	30.9%	38.2%	30.9%
5th	50	14.0%	14.0%	20.0%	52.0%	28.0%
6th	59	10.2%	20.3%	28.8%	40.7%	30.5%
7th	53	13.2%	37.7%	30.2%	18.9%	50.9%
8th	54	9.3%	40.7%	38.9%	11.1%	50.0%

Math scores by grade

Grade	Tested	Exceeded	Met	Nearly Met	Not Met	Met+Above
3rd	47	4.3%	23.4%	19.1%	53.2%	27.7%
4th	57	5.3%	22.8%	36.8%	35.1%	28.1%
5th	51	9.8%	15.7%	23.5%	51.0%	25.5%
6th	59	6.8%	8.5%	32.2%	52.5%	15.3%
7th	53	3.8%	26.4%	30.2%	39.6%	30.2%
8th	54	5.6%	18.5%	31.5%	44.4%	24.1%