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SCHOOL COMMUNITY·LAKE ELSINORE UNIFIED·NCES 060002707605

William Collier Elementary

20150 Mayhall Dr., Wildomar, CA 92595 · (951) 253-7630 · Riverside County
GRADES KG–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL707 STUDENTS
Enrollment
707
Elementary
DISTRICT 654 · STATE 465
Student : Teacher
24.1:1
29 FTE teachers
DISTRICT 22.6:1 · STATE 22.3:1
Free / Reduced Lunch
80%
566 students
DISTRICT 77% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Kindergarten17124%
Grade 19513%
Grade 211917%
Grade 311416%
Grade 48812%
Grade 512017%

This year's kindergarten class (171) is 43% larger than its 5th grade class (120).

Student demographics
52%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 49% · STATE 62% · US 70%
White
11616%
DISTRICT 19% · STATE 20% · US 43%
Hispanic
47167%
DISTRICT 68% · STATE 56% · US 30%
Black
446%
DISTRICT 4% · STATE 5% · US 15%
Asian
264%
DISTRICT 3% · STATE 12% · US 6%
Two+
446%
DISTRICT 4% · STATE 6% · US 5%
Pacific Islander
61%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
35951%
Female
34849%

Discussions

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
39.0%
CA avg 49.1% . +12.0pp since 2014
Math
31.9%
CA avg 37.7% . +9.9pp since 2014

What this means: On the CAASPP, California's statewide test, about 39 of every 100 students at this school read and write at grade level and about 32 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 12 points since 2014, while math scores are up about 10 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts12.9%26.1%29.4%31.6%
Math9.0%22.9%29.0%39.0%
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.

CAASPP results by year

School yearEnglish Language ArtsMath
2024-2539.0%31.9%
2023-2436.4%32.2%
2022-2329.8%27.0%
2021-2233.6%28.9%
2020-2140.9%45.5%
2018-1940.1%32.7%
2017-1836.9%31.3%
2016-1733.3%28.9%
2015-1634.0%23.0%
2014-1527.0%22.0%
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
34.8%
composite math + reading, all grades
Predicted
32.6%
based on CA schools with similar FRL share
Beats by
+2.1pp
above demographic expectation

What this means: About 35% of students here test proficient in math and reading, compared with the roughly 33% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like William Collier Elementary

William Collier Elementary's state test result (34.8% proficient) is higher than 2 of the 4 schools below with a result.

SchoolStudentsLow-incomeProficient
William Collier Elementary this school70780.1%34.8%
Anna Hause Elementary
Beaumont
65678.2%40.5%
Kratt Elementary
Fresno
62079.2%34.7%
Knowledge Enlightens You (KEY) Academy
Hayward
64581.7%N/A
Three Rings Ranch Elementary
Beaumont
79677.1%31.9%
Pachappa Elementary
Riverside
67676.9%48.9%
Matched among California elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where William Collier Elementary ranks

Among elementary schools
MeasureThis schoolIn CaliforniaIn Riverside County
State test proficiency
ranked highest first
34.8%#2,978 of 5,151#125 of 283
Math proficiency
ranked highest first
31.9%#3,021 of 5,172
▼ 165
#118 of 283
▼ 1
Reading proficiency
ranked highest first
39.0%#3,030 of 5,172
▲ 56
#148 of 283
▼ 3
3-year test score change
ranked biggest gain first
+4.2pp#1,892 of 5,116#112 of 280
Enrollment
ranked largest first
707#716 of 5,915#100 of 296
Students per teacher
ranked fewest first
24.1:1#3,836 of 5,352#207 of 292
Diversity index
ranked most diverse first
52.0%#2,611 of 5,354#108 of 292
Free and reduced lunch
ranked highest share first
80.1%#2,184 of 5,625#168 of 294
Enrollment change since 2017-18
ranked fastest growth first
+14.0%#390 of 1,139#23 of 66
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
707
+105 (+17%) vs 2020
+51% since 2000-01, when it was 468
Student : Teacher
24.1:1
was 22.3:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2570729.324.1:180% (566)
2023-2473429.125.2:174% (545)
2022-2370729.124.3:176% (539)
2020-216022722.3:167% (406)
2017-1862026.523.4:174% (459)
2015-165882622.6:177% (450)
2010-11573N/AN/A59% (336)
2000-014682320.4:138% (176)
Source: NCES Common Core of Data. Rows are the federal collections on file for William Collier Elementary.

Since 2017-18: students up 14% (620 to 707); teachers up 11% (26.5 to 29.3).

About William Collier Elementary

William Collier Elementary is a large elementary school in Wildomar, California, under Lake Elsinore Unified. The student body numbers 707 students, from kindergarten through 5. Average enrollment for elementary schools in California is about 465, so this school runs 52% bigger than that.

William Collier Elementary is one school in Lake Elsinore Unified, a system of 24 schools with 20,539 students.

Roughly 67% of students at William Collier Elementary are Hispanic. Other reported shares: 16% White, 6% Black, 6% multiracial, and 4% Asian. Riverside County's residents are about 51% Hispanic, 15 points below the school's share. Pick two students at random and there is a 52% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.

With 29.3 full-time-equivalent teachers in 2024-25, the ratio at William Collier Elementary was 24.1:1. On average, elementary schools in California have 22.3:1, compared with 24.1:1 here. William Collier Elementary's free or reduced-price lunch eligibility rate is 80%.

After adjusting for student poverty, William Collier Elementary lands between the top and bottom 10% of California schools. Its average proficiency rate on state tests is 34.8%; the prediction is 32.6%.

Riverside County has these Census figures: the median household income is $93,074, about 26% of adults have at least a bachelor's degree, and roughly 8% of residents are in poverty. In all, Riverside County has 543 public schools and roughly 424,872 students.

Julia Lee Performing Arts Academy is the closest public school, about 0.6 miles away in a straight line. In all, at least 8 other public schools sit within five miles of William Collier Elementary. Among the 8 closest schools with test data, this one included, William Collier Elementary ranks 3rd on average proficiency.

The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment at William Collier Elementary grew 17% between 2020-21 and 2024-25, from 602 to 707 students. In 2020-21, the student-to-teacher ratio was 22.3:1; by 2024-25 it was 24.1:1.

Discussions about William Collier Elementary may include school events, clubs, and volunteer needs. Questions from prospective families are welcome too.

Riverside County at a glance

View full county profile
Population
2,478,600
Census ACS
Median income
$93,074
Household, ACS
Bachelor's+
26%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
543
424,872 students

Quick facts

School name
William Collier Elementary
District
Lake Elsinore Unified
Address
20150 Mayhall Dr., Wildomar, CA 92595
Phone
(951) 253-7630
County
Riverside County
Level
Elementary
Grade range
KG–05
Total enrollment
707
Teachers (FTE)
29
Student–teacher ratio
24.1:1
Free and reduced lunch
566 (80%)
Locale
21-Suburb: Large
NCES ID
060002707605
Charter school
No
Virtual school
No

Related schools

Other schools in Lake Elsinore Unified
Other schools in Wildomar
Nearby schools

Frequently asked questions

About William Collier Elementary
How large is William Collier Elementary?
William Collier Elementary enrolls approximately 707 students in grades KG-05.
Is William Collier Elementary an elementary, middle, or high school?
William Collier Elementary is an elementary school covering grades KG-05.
How many teachers does William Collier Elementary have?
William Collier Elementary employs 29 FTE teachers, for a student-to-teacher ratio of 24.1:1.
What is the racial breakdown of students at William Collier Elementary?
At William Collier Elementary, the student body is approximately 16% White, 67% Hispanic, 6% Black, 4% Asian, 6% Two or more.
What district is William Collier Elementary in?
William Collier Elementary is part of Lake Elsinore Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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