- Enrollment
- 3,266
- Students per teacher
- 17:1
- Resource Index
- 52/100
Middle school (grades 6-8) · Silver Spring, MD
Sligo Middle
Federal NCES profile for Sligo Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 59/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 240048001458
👥 S:T ratio 47
🌟 Gifted program 70
🎓 Counselors 61
📋 Attendance 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sligo Middle earns 59/100 on the Resource Investment Index, with class sizes near the Maryland median.
- #1 of 10
- middle schools in Silver Spring · Resource Index
- 59
- Resource Index · Higher
- 13.2:1
- students per teacher
- 47.0%
- free-lunch eligible
Sligo Middle has class sizes near the Maryland median. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Sligo Middle ranks #1 of 10 middle schools in Silver Spring, MD.
School address
District: Montgomery County Public Schools · Maryland
NCES ID 240048001458 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+26 students YoY
Sligo Middle held near 702 students from 2022-23 to 2023-24 (+26 headcount).
Teacher FTE lost 52.8 → 49.2 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+26 students YoY 240048001458 · Silver Spring, MD Middle · MID · TRAD
685 enr · 13.2:1 · 47.0% lunch · RII 59
Nearest enrollment peer: Montgomery Blair High (3,266 students)
Sligo Middle held near 702 students from 2022-23 to 2023-24 (+26 headcount). Teacher FTE lost 52.8 → 49.2 across the same CCD years. Read with this school → · District book → · Maryland schools → · Find another →
Sligo Middle in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Montgomery Bla
Montgomery Blair High
3,266 students
- Walter Johnson
Walter Johnson High
3,016 students
- Wheaton High
Wheaton High
2,794 students
- Gaithersburg H
Gaithersburg High
2,441 students
- Seneca Valley
Seneca Valley High
2,409 students
- This school 685
Sligo Middle
685 students
What this shows Sligo Middle reports 685 students on the CCD universe file.
How Sligo Middle compares
Sligo Middle held steady on CCD headcount: ratios and free-lunch share vs Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.2:1 | ▼ 9% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 47.0% | ▼ 4% | 49.0% | 51.7% |
| Enrollment | 685 | top 31% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.2:1
Leaner classes than 65% of US schools, a middle-of-the-pack class size.
685
Bigger than 79% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
47.0%
free-lunch eligible
- 4% below the Maryland average of 49.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
13.2:1
students per teacher
- 9% below state mean
Top 32% in Maryland - lower ratio than 68% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
17.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$19,456
per pupil, district-wide
- above Maryland avg of $18,753
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors3.5 FTE
Per 196 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 5 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 0.9 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 42.0%
White 27.6%
African American 19.6%
Two or More 5.6%
Asian 5.3%
Largest group: Hispanic or Latino at 42.0% of enrollment.
Student-body diversity index 70.3/100
Simpson diversity index - at 70.3, Sligo Middle is more mixed than the Maryland school average of 52.3.
Programs
Gifted & talented Yes
District finance for Montgomery County Public Schools reports $19,456 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Sligo Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Montgomery Blair High | Larger | Similar economic need | Higher S:T ratio |
| Walter Johnson High | Larger | Lower economic need | Higher S:T ratio |
| Wheaton High | Larger | Similar economic need | Higher S:T ratio |
| Gaithersburg High | Larger | Higher economic need | Similar S:T ratio |
| Seneca Valley High | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Sligo Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,016
- Students per teacher
- 19.1:1
- Resource Index
- 51/100
- Enrollment
- 2,794
- Students per teacher
- 17.8:1
- Resource Index
- 43/100
- Enrollment
- 2,441
- Students per teacher
- 14.4:1
- Resource Index
- 56/100
- Enrollment
- 2,409
- Students per teacher
- 15.6:1
- Resource Index
- 41/100
Similar middle schools in Silver Spring
6 comparable middle schools (grades 6-8) serving the same city.
Takoma Park Middle
Standard public school
1,177 students 17.3:1 students per teacher
Silver Spring International Middle
Standard public school
1,015 students 12.8:1 students per teacher
A. Mario Loiederman Middle
Standard public school
978 students 13.4:1 students per teacher
Eastern Middle
Standard public school
963 students 13.6:1 students per teacher
Francis Scott Key Middle
Standard public school
950 students 14.6:1 students per teacher
Argyle Middle
Standard public school
868 students 13.6:1 students per teacher
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~685 students)
Similar student-teacher ratio (~13.2:1)
Frequently asked questions about Sligo Middle
How many students attend Sligo Middle?
Sligo Middle has 685 students enrolled. It is a middle school in Silver Spring, MD. CCD year-over-year: 676 (2022-23) → 702 (2023-24), nearly flat (+26).
What is the student-teacher ratio at Sligo Middle?
The student-teacher ratio at Sligo Middle is 13.2:1, which is 9% lower than the Maryland average of 14.5:1 and 16% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Sligo Middle?
47.0% of students at Sligo Middle are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Sligo Middle?
The largest demographic group at Sligo Middle is Hispanic or Latino at 42.0% of enrollment, in Silver Spring, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.3/100.
What is the Resource Investment Index for Sligo Middle?
Sligo Middle has a Resource Investment Index of 59/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Sligo Middle rank among middle schools in Silver Spring?
By Resource Investment Index, Sligo Middle ranks #1 of 10 middle schools in Silver Spring, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Silver Spring on the city page.
What other schools are in Montgomery County Public Schools?
Besides Sligo Middle, Montgomery County Public Schools also operates Montgomery Blair High (3,266 students), Walter Johnson High (3,016 students), and Wheaton High (2,794 students). See the Montgomery County Public Schools district page for the complete list.