Excellent
#9 of 1,363 schools in MD
Top 1% in state
Triadelphia Ridge Elementary
Elementary School · Howard County Public Schools · Ellicott City, MD
A Howard County Public Schools elementary school where students score 12 points above what's typical for similar communities.
13400 Triadelphia Rd, Ellicott City, MD 21042
- Math 77% vs MD 30% (2025)
- Reading 81% vs MD 51% (2025)
- 13.6:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Triadelphia Ridge Elementary score 79% proficient, which is above what's typical for similar communities (expected: 67%).
2025 MCAP proficiency
Most recent published year. School vs. MD average.
Trend
↑ RecoveringProficiency declined earlier in the 17-year record (2009–2025), then recovered 28 points since 2020, reaching 79% in 2025.
Show all 14 years
Multi-year averages used by the rating model: math 80% (multi-year average, 2009-2025) · reading/ELA 78% (multi-year average, 2009-2025)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 28 test records from MD state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
7.8%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Triadelphia Ridge Elementary sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.
Getting around & local context
- Walk 11Car-Dependent
- Bike 19Somewhat Bikeable
Powered by
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$190,504
Median home value
$674,700
Median rent
$2,253/mo
College educated
74.7%
Homeownership
85.4%
Poverty rate
2.7%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 21042; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Glenelg Country SchoolPrivate · tuition | 8.1private | PK–12 | 1.4 mi | 703 | Compare → |
| Dayton Oaks ElementaryEnrollment path unverified | 9.1 | PK–5 | 1.8 mi | 764 | Compare → |
| Glenwood AcademyPrivate · tuition | 6.0private | 3–12 | 3.0 mi | 51 | Compare → |
| West Friendship ElementaryEnrollment path unverified | 9.6 | K–5 | 3.0 mi | 370 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Howard County Public Schools
- Schools in district
- 78
- Rank in district
- #3 of 76
- District spending per student
- $19,256NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 5.4%Census SAIPE · 2024
Triadelphia Ridge Elementary is listed in Howard County Public Schools; a district label does not verify attendance for an address.
About Triadelphia Ridge Elementary
Triadelphia Ridge Elementary is a public elementary school in Ellicott City, MD, part of Howard County Public Schools, serving approximately 625 students in grades Pre-K-5th with a 13.6:1 student-teacher ratio. It holds a MySchoolScout rating of 9.6 out of 10 and ranks #9 of 1,363 schools in MD. State assessment records show 80% math proficiency (multi-year average, 2009-2025) and 78% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Triadelphia Ridge Elementary
What grades does Triadelphia Ridge Elementary serve?
Triadelphia Ridge Elementary serves students in grades Pre-K through 5th.
How many students attend Triadelphia Ridge Elementary?
Triadelphia Ridge Elementary has an enrollment of approximately 625 students.
What is the student-teacher ratio at Triadelphia Ridge Elementary?
The student-teacher ratio at Triadelphia Ridge Elementary is 13.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Triadelphia Ridge Elementary rank in MD?
Triadelphia Ridge Elementary ranks #9 of 1,363 schools in MD.
What is Triadelphia Ridge Elementary's MySchoolScout rating?
Triadelphia Ridge Elementary has a current MySchoolScout rating of 9.6 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Triadelphia Ridge Elementary?
Based on loaded state assessment records, Triadelphia Ridge Elementary has 80% math proficiency (multi-year average, 2009-2025) and 78% reading/ELA proficiency (multi-year average, 2009-2025).
Is Triadelphia Ridge Elementary a charter school?
No, Triadelphia Ridge Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is Triadelphia Ridge Elementary a Title I school?
No, Triadelphia Ridge Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Triadelphia Ridge Elementary?
7.8% of students at Triadelphia Ridge 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.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- Pre-K – 5th
- Enrollment
- 625
- Student-Teacher Ratio
- 13.6:1
- Teachers (FTE)
- 46
- Type
- regular
- Setting
- Fringe Rural
- County
- Howard County
- Chronic Absenteeism (SY 2022-23)
- 8.5%
- Phone
- (410) 313-2560
- Area population (ZIP 21042)
- 43,021
- Area average commute
- 29.3 min
- Area median age
- 45
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2025 MCAP · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 MCAP · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 21042; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
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