Average
#5422 of 9,533 schools in CA
William Collier Elementary
Elementary School · Lake Elsinore Unified
20150 Mayhall Dr., Wildomar, CA 92595
Enrollment
734
Student-Teacher
25.3:1
Score
6.0
Grades
Kindergarten – 5th
Enrollment
734
Student-Teacher
25.3:1
Score
6.0
Grades
Kindergarten – 5th
Updated
2022-23
Updated 2022-23
How this school compares
In Wildomar
#4 of 8
public schools
California elementary schools
#3,273 of 5,817
In district
#9 of 24
Lake Elsinore Unified
About William Collier Elementary
William Collier Elementary is a regular public elementary school located in Wildomar, California. The school serves students from kindergarten through fifth grade and currently has an enrollment of 734 students. With a student-teacher ratio of 25.3:1, William Collier Elementary provides a supportive learning environment with 29 full-time equivalent teachers.
Academically, the school's MySchoolScout rating is 5.1 out of 10 and it ranks at number 5173 among California’s public schools, placing it in the 46th percentile statewide. The academic score reflects that 39% of students are proficient or above in English Language Arts/Reading and 35% are proficient or above in Math. While there is room for improvement, William Collier Elementary continues to focus on student development and academic growth.
The school is situated in a large suburban area with easy access to local amenities and community resources. William Collier Elementary serves as an integral part of the Wildomar community, fostering a nurturing environment where students can thrive both academically and socially.
What Parents Should Know
The student-teacher ratio at William Collier Elementary is 25.3:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
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William Collier Elementary — Students at William Collier Elementary score 34% proficient, which is above what's typical for similar communities (expected: 33%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
74.3%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 12 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.6/10.
How William Collier Elementary Compares
See how William Collier Elementary performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has remained stable from 33% (2019) to 32.17% (2024). Reading/ELA proficiency has declined from 41% (2019) to 36.39% (2024).
Location
20150 Mayhall Dr., Wildomar, CA 92595
Nearby Alternatives
Families considering William Collier Elementary may also want to explore other elementary schools in the area. Donald Graham Elementary (rated 7.6/10, 2.6 miles away), which scores notably higher. Another option is Cottonwood Canyon Elementary (rated 7.4/10, 3.8 miles away, in nearby Lake Elsinore), which scores notably higher. Additionally, Railroad Canyon Elementary (rated 7.1/10, 3.3 miles away, in nearby Lake Elsinore), which scores notably higher. For more schools in Wildomar, see our Wildomar schools guide .
Nearby Schools
20 within 3.8 mi| School | Distance | Rating |
|---|---|---|
| Julia Lee Performing Arts Academy Lake Elsinore | 0.6 mi | 3.7 |
| FAITH BAPTIST ACADEMY Wildomar | 0.8 mi | 7.0 |
| Elsinore High Wildomar | 1.4 mi | 5.1 |
| Lakeland Village Lake Elsinore | 1.6 mi | 6.5 |
| Wildomar Elementary Wildomar | 1.9 mi | 5.0 |
| California Lutheran High School Wildomar | 2.0 mi | — |
| CALIFORNIA LUTHERAN HIGH SCHOOL Wildomar | 2.0 mi | 7.6 |
| David A. Brown Middle Wildomar | 2.2 mi | 5.5 |
| ANNE SULLIVAN PRESCHOOL & KINDERGARTEN Wildomar | 2.2 mi | — |
| CORNERSTONE CHRISTIAN SCHOOL Wildomar | 2.2 mi | 7.0 |
| GRACE CHRISTIAN SCHOOL OF WILDOMAR Wildomar | 2.4 mi | 7.8 |
| Donald Graham Elementary Wildomar | 2.6 mi | 7.6 |
| Railroad Canyon Elementary Lake Elsinore | 3.3 mi | 7.1 |
| Lambs Christian Lake Elsinore | 3.5 mi | — |
| Bundy Canyon Christian School Wildomar | 3.0 mi | — |
| BUNDY CANYON CHRISTIAN SCHOOL Wildomar | 3.0 mi | 6.7 |
| Grace Christian School of Temecula Valley Wildomer | 3.4 mi | — |
| Ronald Reagan Elementary Wildomar | 3.5 mi | 5.5 |
| Lefebvre Family Home School Lake Elsinore | 3.5 mi | — |
| Cottonwood Canyon Elementary Lake Elsinore | 3.8 mi | 7.4 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 92595 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$98,132
Median Home Value
$523,500
Median Rent
$2,042/mo
Population
34,505
College Educated
18.4%
Homeownership
76.5%
Avg Commute
38.7 min
Poverty Rate
11.4%
Median Age
35.3
Community Profile
The community surrounding William Collier Elementary has a median household income of $98,132. It is a community where 18% of adults hold a bachelor's degree or higher. The median home value in the area is $523,500, with a median rent of $2,042/month. The area has a poverty rate of 11.4%. The average commute in the area is 39 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Almond Grove Elementary Oakley, CA | 6.0 |
| Amelia Earhart Elementary Alameda, CA | 6.0 |
| Balboa Elementary San Diego, CA | 6.0 |
| Bon View Elementary Ontario, CA | 6.0 |
| Burbank Elementary Long Beach, CA | 6.0 |
| Carnelian Elementary Alta Loma, CA | 6.0 |
Frequently Asked Questions
Common questions about William Collier Elementary
What grades does William Collier Elementary serve?
William Collier Elementary serves students in grades Kindergarten through 5th.
How many students attend William Collier Elementary?
William Collier Elementary has an enrollment of approximately 734 students.
What is the student-teacher ratio at William Collier Elementary?
The student-teacher ratio at William Collier Elementary is 25.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does William Collier Elementary rank in CA?
William Collier Elementary is ranked #5422 out of 9,533 schools in CA.
What is William Collier Elementary's MySchoolScout rating?
William Collier Elementary has a composite rating of 6.0 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at William Collier Elementary?
Based on the most recent state assessment data, William Collier Elementary has 35.4% math proficiency and 39.0% reading/ELA proficiency.
Is William Collier Elementary a charter school?
No, William Collier Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is William Collier Elementary a Title I school?
No, William Collier Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for William Collier Elementary?
74.3% of students at William Collier Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,128/100K)
FBI UCR 2024. City-level (Wildomar). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 5th
- Enrollment
- 734
- Student-Teacher Ratio
- 25.3:1
- Teachers (FTE)
- 29
- Free/Reduced Lunch
- 74.3%
- Type
- regular
- Setting
- Large Suburb
- County
- Riverside County
- Phone
- (951) 253-7630
- Data Year
- 2023–2024
Resources & Links
District
Lake Elsinore Unified- District Enrollment
- 20,769
- Schools in District
- 25
- Per-Pupil Spending
- $16,089
- District Rank
- #9 of 24
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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