Serving 516 students in grades Prekindergarten-5, Stone Mill Elementary School ranks in the top 5% of all schools in Maryland for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 72% (which is higher than the Maryland state average of 27%). The percentage of students achieving proficiency in reading/language arts is 80% (which is higher than the Maryland state average of 45%).
The student-teacher ratio of 15:1 is higher than the Maryland state level of 14:1.
Minority enrollment is 77% of the student body (majority Asian), which is higher than the Maryland state average of 69% (majority Black and Hispanic).
Quick Facts (2026)
- Grades: Prekindergarten-5
- Enrollment: 516 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 77%
- Overall Testing Rank: Top 5% in MD
- Math Proficiency: 72% (Top 5%)
- Reading Proficiency: 80% (Top 5%)
- Science Proficiency: 45-49% (Top 30%)
- Attendance Zone: Stone Mill Elementary serves the southern part of Gaithersburg, MD, covering an area of approximately 1.7 square miles. Most families can expect a drive of 5 to 10 minutes to reach the school, with the furthest edge of the attendance zone located about 1.6 miles away.
- Source: National Center for Education Statistics (NCES), MD Dept. of Education
Top Rankings
Stone Mill Elementary School ranks among the top 20% of public schools in Maryland for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
School Overview
Stone Mill Elementary School's student population of 516 students has stayed relatively flat over five school years.
The teacher population of 35 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Prekindergarten-5
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
516 students
Total Classroom Teachers
35 teachers
School Calendar
School Rankings
Stone Mill Elementary School ranks within the top 5% of all 1,338 schools in Maryland (based off of combined math and reading proficiency testing data).
The diversity score of Stone Mill Elementary School is 0.71, which is less than the diversity score at state average of 0.74. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#33 out of 1338 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
72%
27%
Reading/Language Arts Test Scores (% Proficient)
80%
45%
Science Test Scores (% Proficient)
45-49%
36%
Student-Teacher Ratio
15:1
14:1
American Indian
n/a
n/a
Asian
46%
7%
Hispanic
12%
24%
Black
11%
32%
White
23%
31%
Hawaiian
n/a
n/a
Two or more races
8%
6%
All Ethnic Groups
Chronically Absent Students
(22-23)11.2%
32.4%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
11%
46%
Eligible for Reduced Lunch
3%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MD Dept. of Education
Frequently Asked Questions
What is Stone Mill Elementary School's ranking?
Stone Mill Elementary School is ranked #33 out of 1,338 schools, which ranks it among the top 5% of public schools in Maryland.
What schools are Stone Mill Elementary School often compared to?
Stone Mill Elementary Schoolis often viewed alongside schools like Lakewood Elementary School, Dufief Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
72% of students have achieved math proficiency (compared to the 27% MD state average), while 80% of students have achieved reading proficiency (compared to the 45% MD state average).
How many students attend Stone Mill Elementary School?
516 students attend Stone Mill Elementary School.
What is the racial composition of the student body?
46% of Stone Mill Elementary School students are Asian, 23% of students are White, 12% of students are Hispanic, 11% of students are Black, and 8% of students are Two or more races.
What is the student-teacher ratio of Stone Mill Elementary School?
Stone Mill Elementary School has a student ration of 15:1, which is higher than the Maryland state average of 14:1.
What grades does Stone Mill Elementary School offer ?
Stone Mill Elementary School offers enrollment in grades Prekindergarten-5 (Supplemental Virtual).
What school district is Stone Mill Elementary School part of?
Stone Mill Elementary School is part of Montgomery County School District.
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