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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
2
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Kindergarten
171
Grade 1
95
Grade 2
119
Grade 3
114
Grade 4
88
Grade 5
120
Student demographics
White
16%
DISTRICT 19% · STATE 20%
Hispanic
67%
DISTRICT 68% · STATE 56%
Black
6%
DISTRICT 4% · STATE 5%
Asian
4%
DISTRICT 3% · STATE 12%
Two+
6%
DISTRICT 4% · STATE 6%
Native American
n/r
Pacific Islander
n/r
n/r: not reliably reported by NCES for this school. Hispanic, Pacific Islander, and Native American enrollment are systematically under-reported in the source data.
Gender split
Male
51%
Female
49%

Discussions

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Test scores

CAASPP 2023-24 . % met or exceeded standard
English Language Arts
36.4%
CA avg 47.1% . +9.4pp since 2014
Math
32.2%
CA avg 35.6% . +10.2pp since 2014
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
34.2%
composite math + reading, all grades
Predicted
31.8%
based on CA schools with similar FRL share
Beats by
+2.4pp
above demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
707
+87 (+14%) vs 2017
Student : Teacher
24.1:1
was 23.4:1
% White
16%
was 24%
% Hispanic
67%
was 63%
% Black
6%
was 3%
% Asian
4%
was 2%
Source: NCES Common Core of Data

About William Collier Elementary

William Collier Elementary is an expansive elementary-level community in Wildomar, California, operated by Lake Elsinore Unified. The school educates 707 students in grades K through 5. Compared to the state average of about 465 students per school, that is 52% bigger than typical.

Within Lake Elsinore Unified, which oversees 24 schools and 20,539 students, William Collier Elementary is one campus in the system.

On the student-mix side, William Collier Elementary shows that the largest single group is Hispanic, at 67% of enrollment. The remainder is composed of 16% White, 6% Black, 6% multiracial, 4% Asian. That is noticeably more Hispanic than the county at large, where the share is closer to 51%.

Looking at the economic backdrop, William Collier Elementary shows 29 full-time-equivalent teachers, putting the student-to-teacher ratio at about 24.1:1. Statewide, the average ratio sits near 22.3:1, putting William Collier Elementary higher than the state norm the norm. An estimated 80% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

With demographic context factored in, William Collier Elementary tracks the demographic baseline. The model predicts 31.8% given the school's FRL share; actual proficiency is 34.2%.

Across the wider county, Riverside County reports that median household income runs about $93,074, roughly 26% of adults have completed at least a four-year degree, and roughly 8% of residents live below the federal poverty line. In all, Riverside County runs 543 public schools (combined enrollment of about 424,872 students), of which William Collier Elementary is one.

Nearest neighbor: Julia Lee Performing Arts Academy, around 0.6 miles off. Counting just inside five miles, 8 other public schools cluster around William Collier Elementary. Among the 8 schools in that immediate cluster with test data (this one included), William Collier Elementary ranks 2nd on composite proficiency, higher than the local average of 30.7%.

The campus sits in an outer-ring setting.

Looking at the recent track record. Over the past 7-year window, the student count ticked up 14%: 620 students in 2018 compared to 707 in 2025. The White share of enrollment fell from 24% to 16% over that span.

On the community side, the feed for William Collier Elementary typically covers school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.

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/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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