Community prompt from u/allk12. Replies below.
Mary Williams Elementary
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 44 | 7% |
| Kindergarten | 102 | 15% |
| Grade 1 | 90 | 13% |
| Grade 2 | 113 | 17% |
| Grade 3 | 106 | 16% |
| Grade 4 | 110 | 16% |
| Grade 5 | 104 | 16% |
This year's kindergarten class (102) is about the same size as its 5th grade class (104).
Test scores
SOL 2024-25 . % PassingWhat this means: On the SOL, Virginia's statewide test, about 70 of every 100 students at this school read and write at grade level and about 72 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 4 points since 2022, while math scores are up about 6 points.
SOL results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 70.0% | 72.0% |
| 2023-24 | 68.0% | 74.0% |
| 2022-23 | 66.0% | 66.0% |
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 70% of students here test proficient in math and reading, compared with the roughly 69% 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%.
Schools most like Mary Williams Elementary
Mary Williams Elementary's state test result (70.3% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mary Williams Elementary this school | 669 | 70.9% | 70.3% |
| Lorton Station Elementary Lorton | 745 | 70.2% | 60.2% |
| Swans Creek Elementary Dumfries | 619 | 70.9% | 70.9% |
| Leesylvania Elementary Woodbridge | 759 | 70.8% | 70.9% |
| River Oaks Elementary Woodbridge | 662 | 71.8% | 52.9% |
| Samuel W. Tucker Elementary Alexandria | 735 | 77.0% | 63.8% |
Where Mary Williams Elementary ranks
Among elementary schools| Measure | This school | In Virginia | In Prince William County |
|---|---|---|---|
| State test proficiency ranked highest first | 70.3% | #585 of 1,101 | #44 of 64 |
| Math proficiency ranked highest first | 72.0% | #633 of 1,111 ▼ 114 | #49 of 64 ▼ 8 |
| Reading proficiency ranked highest first | 70.0% | #610 of 1,111 ▲ 57 | #45 of 64 ▲ 5 |
| Enrollment ranked largest first | 669 | #234 of 1,176 | #24 of 64 |
| Students per teacher ranked fewest first | 15.9:1 | #903 of 1,105 | #35 of 64 |
| Diversity index ranked most diverse first | 75.0% | #55 of 1,106 | #13 of 64 |
| Free and reduced lunch ranked highest share first | 70.9% | #651 of 1,157 | #16 of 64 |
| Enrollment change since 2017-18 ranked steepest decline first | -10.9% | #412 of 759 | #24 of 45 |
4-year change
SY 2020-21 vs SY 2024-25Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 669 | 42.2 | 15.9:1 | 71% (474) |
| 2023-24 | 697 | 44.4 | 15.7:1 | 61% (424) |
| 2022-23 | 718 | 45.3 | 15.9:1 | 57% (408) |
| 2020-21 | 680 | 45 | 15.1:1 | N/A |
| 2017-18 | 751 | 46.3 | 16.2:1 | 37% (280) |
| 2015-16 | 984 | 56 | 17.6:1 | 42% (410) |
| 2010-11 | 810 | 46 | 17.6:1 | 41% (331) |
Since 2017-18: students down 11% (751 to 669); teachers down 9% (46.3 to 42.2).
About Mary Williams Elementary
Mary Williams Elementary is a medium-sized elementary school in Dumfries, Virginia. Students in pre-K through 5 attend, and enrollment is 669 students. The school's enrollment is 34% larger than the 499 average for elementary schools in Virginia.
Within Prince William County Public Schools, Mary Williams Elementary is one of 95 schools. The district enrolls 90,242 students.
No single group makes up more than half of enrollment at Mary Williams Elementary. The largest is Black students, at 34%. The next largest groups are 28% Hispanic, 17% Asian, 15% White, and 5% multiracial. In Prince William County overall, about 20% of residents are Black. The school's diversity index is 75%, meaning two students picked at random have a 75% chance of belonging to different racial or ethnic groups.
Teachers at the school number 42.2 full-time equivalents, and the ratio is 15.9:1. This ratio sits 2.0 above the 13.8:1 average for elementary schools in Virginia. Roughly 71% of the student body qualifies for free or reduced-price lunch. Across public schools in Prince William County, the average is 55%.
Mary Williams Elementary posts an average proficiency rate on state tests of 70.3%, compared with a predicted 68.8%. It is not in the top or bottom 10% of Virginia schools on BeatsExpectations.
Federal survey data for Prince William County show that the median household income is $131,402, 45% of adults hold a bachelor's degree or higher, and about 5% of people live in poverty. There are 102 public schools in Prince William County, enrolling about 89,591 students in all.
The nearest public school is Potomac Middle, at about 0.2 miles. Inside a five-mile radius, there are at least 8 other public schools. Mary Williams Elementary comes in 5th of 9 nearby schools on average proficiency.
In the federal locale system, Mary Williams Elementary is coded Suburb: Large, for schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment has been fairly stable: 680 in 2020-21 and 669 in 2024-25.
If you have questions about school safety, transportation, and start times at Mary Williams Elementary, you can post them here. Anyone with firsthand experience at this school can post or comment.
Prince William County at a glance
View full county profileQuick facts
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