Enrollment
619
Maryland · 2024-25 NCES data
Elementary school (grades K-5) · Ellicott City, MD
Triadelphia Ridge Elementary
Federal NCES profile for Triadelphia Ridge Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 49/100.
2024-25 NCES dataElementary school (grades K-5)NCES 240042001026
👥 S:T ratio 42
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 86
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Triadelphia Ridge Elementary earns 49/100 on the Resource Investment Index, with class sizes near the Maryland median.
- #2 of 5
- elementary schools in Ellicott City · Resource Index
- 49
- Resource Index · Higher
- 14.4:1
- students per teacher
- 4.6%
- free-lunch eligible
Triadelphia Ridge Elementary has class sizes near the Maryland median. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Triadelphia Ridge Elementary ranks #2 of 5 elementary schools in Ellicott City, MD.
School address
District: Howard County Public Schools · Maryland
NCES ID 240042001026 Verify on NCES CCD record →
Teachers (FTE)
43.0
Federal CCD staff survey
Students per teacher
14.4:1
vs 14.5:1 Maryland avg
-1% vs state
Free-lunch eligible
4.6%
vs 49.0% Maryland avg
-91% vs state
Student-teacher ratio in context
How Triadelphia Ridge Elementary compares with Maryland and U.S. medians
What stands out at Triadelphia Ridge Elementary
Triadelphia Ridge Elementary is a lower-poverty, mid-sized elementary school in Ellicott City, Maryland, enrolling 619 students.
At 14.4:1, its student-teacher ratio sits close to the Maryland median, within a few percentage points of the 14.5:1 state norm, neither notably crowded nor notably small.
Comparatively few students face economic hardship here, 4.6% free-meal eligibility runs 91% below the Maryland average.
With 619 students, its enrollment sits close to the Maryland median campus size.
Its Resource Investment Index lands in the upper third of 1,382 scored Maryland schools.
Against 130 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #41.
Its student body is led by Asian (44%) and White (38%) (diversity index 65/100).
Counselor access is stretched at roughly 619 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 5.8% of students were chronically absent, below the typical post-pandemic national figure.
Among Ellicott City's elementary schools, it stands alongside Northfield Elementary (764 students): Triadelphia Ridge Elementary is smaller than that campus by headcount and runs leaner classes (14.4:1 vs 15.6:1).
Howard County Public Schools also operates Marriotts Ridge High (1,741 students) and Reservoir High (1,597 students) alongside Triadelphia Ridge Elementary.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Triadelphia Ridge Elementary compares
Triadelphia Ridge Elementary on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.4:1 | ▼ 1% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 4.6% | ▼ 91% | 49.0% | 51.7% |
| Enrollment | 619 | top 38% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.4:1
Leaner classes than 53% of US schools, a middle-of-the-pack class size.
619
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
4.6%
free-lunch eligible
- 91% below the Maryland average of 49.0%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14.4:1
students per teacher
- 1% below state mean
Top 49% in Maryland - lower ratio than 51% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
5.8%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$17,971
per pupil, district-wide
- below Maryland avg of $20,446
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 619 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 5 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.8 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Asian 43.8%
White 38.1%
African American 7.1%
Two or More 6.3%
Hispanic or Latino 4.2%
American Indian / Alaska Native 0.5%
Largest group: Asian at 43.8% of enrollment.
Student-body diversity index 65.2/100
Simpson diversity index - at 65.2, Triadelphia Ridge Elementary is more mixed than the Maryland school average of 52.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Howard County Public Schools, which includes Triadelphia Ridge Elementary.
$17,971
Per student
-12%
vs Maryland
Avg $20,446
+8%
vs U.S.
Avg $16,593
Revenue mix
Local 62.7%
State 29.5%
Federal 7.7%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Triadelphia Ridge Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Marriotts Ridge High | Larger | Similar economic need | Higher S:T ratio |
| Reservoir High | Larger | Higher economic need | Similar S:T ratio |
| Atholton High | Larger | Higher economic need | Higher S:T ratio |
| Howard High | Larger | Higher economic need | Similar S:T ratio |
| Mount Hebron High | Larger | Higher economic need | Similar S:T ratio |
Comparisons are relative to Triadelphia Ridge Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,741
- Students per teacher
- 17.2:1
- Resource Index
- 52/100
- Enrollment
- 1,597
- Students per teacher
- 13.2:1
- Resource Index
- 49/100
- Enrollment
- 1,540
- Students per teacher
- 16.4:1
- Resource Index
- 46/100
- Enrollment
- 1,493
- Students per teacher
- 13.5:1
- Resource Index
- 52/100
- Enrollment
- 1,455
- Students per teacher
- 13.7:1
- Resource Index
- 50/100
Similar elementary schools in Ellicott City
4 comparable elementary schools (grades K-5) serving the same city.
Northfield Elementary
Standard public school
764 students 15.6:1 students per teacher
Manor Woods Elementary
Standard public school
697 students 14.2:1 students per teacher
Hollifield Station Elementary
Standard public school
677 students 13:1 students per teacher
St. Johns Lane Elementary
Standard public school
636 students 14.5:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Maryland, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~619 students)
Next steps
Verify locally before acting on Triadelphia Ridge Elementary's federal record.
- Compare Triadelphia Ridge Elementary against another school. Compare schools
- Howard County Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Triadelphia Ridge Elementary
How many students attend Triadelphia Ridge Elementary?
Triadelphia Ridge Elementary has 619 students enrolled. It is an elementary school in Ellicott City, MD.
What is the student-teacher ratio at Triadelphia Ridge Elementary?
The student-teacher ratio at Triadelphia Ridge Elementary is 14.4:1, which is 1% lower than the Maryland average of 14.5:1 and 8% 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 Triadelphia Ridge Elementary?
4.6% of students at Triadelphia Ridge Elementary are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Triadelphia Ridge Elementary?
The largest demographic group at Triadelphia Ridge Elementary is Asian at 43.8% of enrollment, in Ellicott City, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.2/100.
What is the Resource Investment Index for Triadelphia Ridge Elementary?
Triadelphia Ridge Elementary has a Resource Investment Index of 49/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Triadelphia Ridge Elementary rank among elementary schools in Ellicott City?
By Resource Investment Index, Triadelphia Ridge Elementary ranks #2 of 5 elementary schools in Ellicott City, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Ellicott City on the city page.
Is Triadelphia Ridge Elementary a good school?
Triadelphia Ridge Elementary earns 49/100 on the Resource Investment Index, with class sizes near the Maryland median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Howard County Public Schools?
Besides Triadelphia Ridge Elementary, Howard County Public Schools also operates Marriotts Ridge High (1,741 students), Reservoir High (1,597 students), and Atholton High (1,540 students). See the Howard County Public Schools district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.