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How has Mosaic Elementary changed in the last five years, for better or worse?
Community prompt from u/allk12. Replies below.
Enrollment
927
Elementary
DISTRICT 630 · STATE 499
SCHOOL COMMUNITY·FAIRFAX COUNTY PUBLIC SCHOOLS·NCES 510126000539
Mosaic Elementary
9819 Five Oaks Rd, Fairfax, VA 22031 · (703) 937-1600 · Fairfax County
GRADES PK–06ELEMENTARY21-SUBURBREGULAR SCHOOL927 STUDENTS
Student : Teacher
15.5:1
60 FTE teachers
DISTRICT 13.6:1 · STATE 13.8:1
Free / Reduced Lunch
27%
247 students
DISTRICT 39% · STATE 66%
Community
1
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
| Grade | Students | Share |
|---|---|---|
| Pre-K | 18 | 2% |
| Kindergarten | 92 | 10% |
| Grade 1 | 95 | 10% |
| Grade 2 | 112 | 12% |
| Grade 3 | 143 | 15% |
| Grade 4 | 151 | 16% |
| Grade 5 | 174 | 19% |
| Grade 6 | 142 | 15% |
This year's kindergarten class (92) is 35% smaller than its 6th grade class (142).
Student demographics
73%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 74% · STATE 71% · US 70%
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
Test scores
SOL 2024-25 . % PassingEnglish Language Arts
87.0%
VA avg 74.2% . +1.0pp since 2022
Math
92.0%
VA avg 72.7% . +4.0pp since 2022
What this means: On the SOL, Virginia's statewide test, about 87 of every 100 students at this school read and write at grade level and about 92 of 100 do math at grade level. Across all Virginia schools, those numbers are about 74 and 73. Reading and writing scores are up about 1 points since 2022, while math scores are up about 4 points.
SOL results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 87.0% | 92.0% |
| 2023-24 | 87.0% | 89.0% |
| 2022-23 | 86.0% | 88.0% |
% Passing, all students and all tested grades.
Source: SOL. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
85.5%
composite math + reading, all grades
Predicted
80.8%
based on VA schools with similar FRL share
Beats by
+4.7pp
above demographic expectation
What this means: About 86% of students here test proficient in math and reading, compared with the roughly 81% typical for Virginia 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 Virginia'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 Mosaic Elementary
Mosaic Elementary's state test result (85.5% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mosaic Elementary this school | 927 | 26.6% | 85.5% |
| Buckland Mills Elementary Gainesville | 735 | 30.2% | 82.3% |
| Hutchison Farm Elementary South Riding | 672 | 30.5% | 82.5% |
| Cedar Lane Elementary Ashburn | 701 | 22.8% | 85.9% |
| Little River Elementary South Riding | 701 | 16.7% | 85.4% |
| Centreville Elementary Centreville | 741 | 37.0% | 80.8% |
Matched among Virginia 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 Mosaic Elementary ranks
Among elementary schools| Measure | This school | In Virginia | In Fairfax County |
|---|---|---|---|
| State test proficiency ranked highest first | 85.5% | #157 of 1,101 | #37 of 136 |
| Math proficiency ranked highest first | 92.0% | #62 of 1,111 ▲ 35 | #18 of 136 ▲ 6 |
| Reading proficiency ranked highest first | 87.0% | #140 of 1,111 ▼ 19 | #42 of 136 ▼ 8 |
| Enrollment ranked largest first | 927 | #25 of 1,176 | #7 of 144 |
| Students per teacher ranked fewest first | 15.5:1 | #862 of 1,105 | #118 of 143 |
| Diversity index ranked most diverse first | 72.9% | #110 of 1,106 | #27 of 143 |
| Free and reduced lunch ranked highest share first | 26.6% | #966 of 1,157 | #79 of 140 |
| Enrollment change since 2017-18 ranked steepest decline first | -13.0% | #353 of 759 | #49 of 110 |
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 2024-25Enrollment
927
-39 (-4%) vs 2020
+132% since 1990-91, when it was 400
Student : Teacher
15.5:1
was 15.8:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 927 | 59.7 | 15.5:1 | 27% (247) |
| 2023-24 | 966 | 58.1 | 16.6:1 | 27% (259) |
| 2022-23 | 958 | 57.3 | 16.7:1 | 25% (238) |
| 2020-21 | 966 | 61 | 15.8:1 | N/A |
| 2017-18 | 1,065 | 62.1 | 17.1:1 | 22% (233) |
| 2015-16 | 1,022 | 63 | 16.2:1 | 22% (226) |
| 2010-11 | 836 | 37 | 22.6:1 | 31% (258) |
| 2000-01 | 562 | 37 | 15.2:1 | 44% (247) |
| 1990-91 | 400 | 22 | 18.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mosaic Elementary.
Since 2017-18: students down 13% (1,065 to 927); teachers down 4% (62.1 to 59.7).
About Mosaic Elementary
Mosaic Elementary is a public elementary school in Fairfax, Virginia. It educates 927 students in pre-K through 6. The school's enrollment is 86% above the 499 average for elementary schools in Virginia.
Mosaic Elementary is a school in Fairfax County Public Schools. The district has 199 schools and 179,323 students.
Enrollment at Mosaic Elementary is mixed, with White students the largest group at 35%. Beyond that, enrollment is 33% Asian, 17% Hispanic, 8% Black, and 7% multiracial. In Fairfax County overall, about 49% of residents are White. The chance that two students picked at random at Mosaic Elementary belong to different racial or ethnic groups, known as the diversity index, is 73%.
Federal records show a student-to-teacher ratio of 15.5:1 at Mosaic Elementary, with 59.7 full-time-equivalent teachers. The 13.8:1 average for elementary schools in Virginia is lower than this school's figure. Free and reduced-price lunch eligibility, a common measure of family income, is 27%. Across public schools in Fairfax County, the average is 37%.
In Virginia, Mosaic Elementary is in the middle band of BeatsExpectations: 85.5% actual against a predicted 80.8%.
County data help place the school in context: in Fairfax County, median household income is about $153,637, about 65% of adults have at least a bachelor's degree, and the poverty rate is about 4%. Mosaic Elementary is among the 222 public schools in Fairfax County.
Oakton High is the public school closest to Mosaic Elementary, about 0.6 miles away. Inside a five-mile radius, there are at least 8 other public schools. Ranked by average proficiency, Mosaic Elementary places 6th out of 9 schools in its immediate area.
Locale: Suburb: Large. In NCES terms, the school is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Federal counts put enrollment at 966 in 2020-21 and 927 in 2024-25, a 4% decrease.
Parents and students can post about school events, clubs, and volunteer needs at Mosaic Elementary. Alumni can share how the school prepared them.
Fairfax County at a glance
View full county profilePopulation
1,147,837
Census ACS
Median income
$153,637
Household, ACS
Bachelor's+
65%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
222
174,475 students
Quick facts
Related schools
Other schools in Fairfax County Public Schools
- Lake Braddock SecondaryHigh · 4,411 students
- Robinson SecondaryHigh · 3,710 students
- Hayfield SecondaryHigh · 3,256 students
- Chantilly HighHigh · 2,937 students
- West Springfield HighHigh · 2,799 students
- Westfield HighHigh · 2,737 students
Other schools in Fairfax
- Robinson SecondaryHigh · 3,710 students
- Woodson HighHigh · 2,436 students
- Fairfax HighHigh · 2,404 students
- Frost MiddleMiddle · 1,272 students
- Johnson MiddleMiddle · 1,165 students
- Providence ElementaryElementary · 954 students
Other Mosaic Elementary schools
One other US public school is named Mosaic Elementary. Mosaic Elementary is the largest of the 2.
- MOSAIC ELEMENTARYSt. Louis, MO · 258 students
Nearby schools
- Oakton High0.6 mi · 2,621
- Fairfax High0.6 mi · 2,404
- Oakton Elementary1.2 mi · 795
- Daniels Run Elementary1.3 mi · 811
- Marshall Road Elementary1.4 mi · 691
- Flint Hill Elementary1.8 mi · 614
Frequently asked questions
About Mosaic ElementaryWhat is the total enrollment at Mosaic Elementary?
Mosaic Elementary enrolls approximately 927 students in grades PK-06.
What age range does Mosaic Elementary serve?
Mosaic Elementary serves students from grade PK through grade 06.
How many teachers does Mosaic Elementary have?
Mosaic Elementary employs 60 FTE teachers, for a student-to-teacher ratio of 15.5:1.
What is the student diversity at Mosaic Elementary?
Student demographics at Mosaic Elementary are roughly 35% White, 17% Hispanic, 8% Black, 33% Asian, 7% Two or more.
What district is Mosaic Elementary in?
Mosaic Elementary is part of Fairfax County Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.