Triadelphia Ridge Elementary School (Ranked Top 10% for 2025-26)

13400 Triadelphia Rd
Ellicott City, MD 21042

( shown in map)

10/

Top 10%

Serving 625 students in grades Prekindergarten-5, Triadelphia Ridge Elementary School ranks in the top 10% 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 is 71% (which is higher than the Maryland state average of 27%). The percentage of students achieving is 71% (which is higher than the Maryland state average of 45%).

The student-teacher ratio of 14:1 is equal to the Maryland state level of 14:1.

Minority enrollment is 60% of the student body (majority Asian), which is lower than the Maryland state average of 68% (majority Black and Hispanic).

Quick Facts (2025-26)

Grades: Prekindergarten-5
Enrollment: 625 students
Student-Teacher Ratio: 14:1
Minority Enrollment: 60%
: Top 10% in MD
: 71% (Top 5%)
: 71% (Top 10%)
: 60-64% (Top 10%)
Source: National Center for Education Statistics (NCES), MD Dept. of Education

Top Rankings

Triadelphia Ridge Elementary School ranks among the top 20% of public schools in Maryland for:

School Overview

Triadelphia Ridge Elementary School's student population of 625 students has grown by 11% over five school years.

The teacher population of 46 teachers has grown by 15% over five school years.

Grades Offered

Grades Prekindergarten-5
(Supplemental Virtual)

View Data

Distribution of Students By Grade Trends
Grade	Triadelphia Ridge Elementary School
Pre-K	19
Kind	80
1	82
2	114
3	94
4	103
5	133

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Total Students

625 students

View Data

Total Students Trends Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School
2023	605
2022	562
2021	540
2020	563
2019	563
2018	560
2017	560
2016	528
2015	509
2014	485
2013	442
2012	411
2011	406
2010	428
2009	431
2008	431
2007	432
2006	671
2005	701
2004	693
2003	694
2002	671
2001	658
2000	618
1999	593

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Gender %

Total Classroom Teachers

46 teachers

View Data

Total Classroom Teachers Trends Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School
2023	44
2022	41
2021	41
2020	40
2019	40
2018	39
2017	39
2016	34
2015	33
2014	36
2013	34
2012	36
2011	31
2010	30
2009	34
2008	35
2007	33
2006	45
2005	47
2004	43
2003	41
2002	41
2001	41
2000	38
1999	38

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School Mascot

Retrievers

School Rankings

Triadelphia Ridge Elementary School ranks within the top 10% of all 1,338 schools in Maryland (based off of combined math and reading proficiency testing data).

The of Triadelphia Ridge Elementary School is 0.67, 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.

This School

State Level (MD)

#82 out of 1338 schools
(Top 10%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Triadelphia Ridge Elementary School
2023	#82
2022	#83
2021	#140
2019	#69
2018	#67
2017	#67
2016	#177
2015	#259
2014	#111
2013	#33
2012	#49

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71%

27%

View Data

Math Proficiency Comparison Over Years (2011-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	71%	27%	46%
2022	67%	25%	42%
2021	52%	20%	34%
2019	79%	38%	56%
2017	76%	41%	59%
2016	82%	42%	59%
2015	70%	38%	55%
2014	96%	72%	83%
2013	97%	79%	89%
2012	97%	82%	92%
2011	98%	80%	91%

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71%

45%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2022	71%	45%	58%
2021	51%	36%	49%
2019	73%	46%	60%
2017	70%	41%	55%
2016	66%	44%	58%
2015	62%	45%	58%
2014	95%	82%	91%
2013	98%	85%	93%
2012	99%	85%	92%
2011	98%	85%	93%
2010	98%	84%	92%

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60-64%

36%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2022	62%	36%	52%
2021	77%	41%	54%

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Student-Teacher Ratio

14:1

View Data

Student-Teacher Ratio Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	14:1	14:1	13:1
2022	14:1	14:1	13:1
2021	13:1	14:1	14:1
2020	14:1	15:1	13:1
2019	14:1	15:1	13:1
2018	14:1	15:1	13:1
2017	14:1	15:1	13:1
2016	16:1	15:1	13:1
2015	15:1	15:1	13:1
2014	14:1	15:1	14:1
2013	13:1	15:1	14:1
2012	11:1	15:1	14:1
2011	13:1	15:1	14:1
2010	14:1	15:1	13:1
2009	13:1	15:1	13:1
2008	12:1	14:1	13:1
2007	13:1	15:1	14:1
2006	15:1	16:1	14:1
2005	15:1	16:1	15:1
2004	16:1	16:1	15:1
2003	17:1	16:1	15:1
2002	16:1	16:1	15:1
2001	16:1	17:1	15:1
2000	16:1	17:1	16:1
1999	16:1	18:1	17:1

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American Indian

n/a

Asian

40%

View Data

Asian Student Percentage Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	38%	7%	23%
2022	35%	7%	24%
2021	30%	7%	23%
2020	28%	7%	22%
2019	28%	7%	22%
2018	30%	7%	21%
2017	30%	7%	21%
2016	30%	7%	20%
2015	29%	7%	19%
2014	24%	6%	18%
2013	21%	6%	18%
2012	17%	7%	17%
2011	14%	6%	17%
2010	14%	7%	17%
2009	12%	6%	16%
2008	12%	6%	16%
2007	11%	6%	15%
2006	9%	5%	14%
2005	10%	5%	14%
2004	9%	5%	12%
2003	8%	5%	11%
2002	6%	5%	11%
2001	5%	5%	10%
2000	3%	4%	9%
1999	3%	4%	8%

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Hispanic

23%

View Data

Hispanic Student Percentage Comparison Over Years (2003-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	5%	22%	14%
2022	5%	21%	13%
2021	6%	20%	13%
2020	7%	18%	11%
2019	7%	18%	11%
2018	5%	17%	10%
2017	5%	17%	10%
2016	3%	16%	10%
2015	4%	15%	9%
2014	6%	14%	9%
2013	5%	13%	9%
2012	4%	12%	9%
2011	5%	12%	8%
2010	2%	10%	6%
2009	1%	10%	6%
2008	2%	9%	5%
2007	2%	8%	5%
2006	2%	8%	4%
2005	2%	7%	4%
2004	1%	6%	4%
2003	1%	6%	3%

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Black

33%

View Data

Black Student Percentage Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	8%	33%	25%
2022	8%	33%	25%
2021	9%	34%	25%
2020	8%	34%	25%
2019	8%	34%	25%
2018	5%	34%	24%
2017	5%	34%	24%
2016	5%	34%	23%
2015	3%	34%	23%
2014	4%	35%	22%
2013	5%	35%	21%
2012	6%	35%	21%
2011	6%	36%	20%
2010	6%	38%	22%
2009	6%	38%	21%
2008	8%	38%	21%
2007	6%	38%	20%
2006	6%	38%	20%
2005	5%	38%	19%
2004	4%	38%	18%
2003	4%	37%	18%
2002	4%	37%	18%
2001	4%	37%	18%
2000	3%	37%	18%
1999	3%	37%	17%

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White

40%

32%

View Data

White Student Percentage Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	41%	33%	31%
2022	44%	34%	32%
2021	48%	34%	33%
2020	47%	36%	36%
2019	47%	36%	36%
2018	51%	38%	39%
2017	51%	38%	39%
2016	52%	39%	41%
2015	56%	40%	43%
2014	56%	41%	45%
2013	59%	42%	46%
2012	63%	42%	47%
2011	66%	43%	49%
2010	78%	45%	55%
2009	81%	46%	57%
2008	78%	47%	58%
2007	81%	48%	60%
2006	83%	49%	62%
2005	83%	50%	63%
2004	86%	51%	66%
2003	87%	52%	68%
2002	89%	53%	68%
2001	91%	53%	69%
2000	94%	55%	71%
1999	94%	55%	73%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	8%	5%	7%
2022	7%	5%	6%
2021	7%	5%	6%
2020	9%	5%	6%
2019	9%	5%	6%
2018	9%	4%	6%
2017	9%	4%	6%
2016	10%	4%	6%
2015	8%	4%	6%
2014	9%	4%	6%
2013	10%	4%	6%

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All Ethnic Groups

0.67

0.74

View Data

Diversity Score Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	0.68	0.73	0.77
2022	0.68	0.73	0.77
2021	0.67	0.73	0.76
2020	0.69	0.72	0.75
2019	0.69	0.72	0.75
2018	0.64	0.72	0.74
2017	0.64	0.72	0.74
2016	0.63	0.71	0.73
2015	0.60	0.70	0.72
2014	0.63	0.69	0.72
2013	0.60	0.69	0.71
2012	0.57	0.69	0.70
2011	0.54	0.67	0.69
2010	0.37	0.65	0.62
2009	0.33	0.64	0.61
2008	0.37	0.63	0.59
2007	0.33	0.62	0.58
2006	0.30	0.61	0.56
2005	0.29	0.60	0.55
2004	0.25	0.60	0.52
2003	0.24	0.59	0.50
2002	0.20	0.58	0.49
2001	0.17	0.58	0.48
2000	0.13	0.56	0.46
1999	0.15	0.56	0.44

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Participates in the

Yes

Eligible for

44%

View Data

Free Lunch Eligibility Comparison Over Years (1999-2023)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2023	5%	46%	26%
2022	2%	38%	18%
2021	2%	40%	17%
2020	2%	41%	16%
2019	2%	41%	16%
2016	1%	40%	17%
2015	2%	39%	16%
2014	2%	38%	16%
2013	2%	36%	14%
2012	3%	36%	14%
2011	4%	33%	13%
2010	1%	31%	11%
2009	1%	27%	10%
2008	1%	26%	9%
2006	1%	25%	8%
2005	1%	25%	8%
2004	1%	24%	7%
2002	1%	23%	7%
2001	1%	23%	7%
2000	1%	24%	7%
1999	2%	25%	8%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2004-2020)
Year	Triadelphia Ridge Elementary School	Maryland	Howard County School District
2020	1%	6%	4%
2019	1%	6%	4%
2016	1%	5%	3%
2015	1%	6%	3%
2014	2%	6%	3%
2013	1%	6%	3%
2012	1%	6%	3%
2010	1%	7%	3%
2009	1%	8%	3%
2005	1%	7%	3%
2004	1%	7%	3%

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School Statewide Testing

School District Name

Howard County School District

Source: National Center for Education Statistics (NCES), MD Dept. of Education

School Notes

School Mascot: Retrievers

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Triadelphia Ridge Elementary School's ranking?

Triadelphia Ridge Elementary School is ranked #82 out of 1,338 schools, which ranks it among the top 10% of public schools in Maryland.

What schools are Triadelphia Ridge Elementary School often compared to?

Triadelphia Ridge Elementary Schoolis often viewed alongside schools like Manor Woods Elementary School, Bushy Park Elementary School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

71% of students have achieved math proficiency (compared to the 27% MD state average), while 71% of students have achieved reading proficiency (compared to the 45% MD state average).

How many students attend Triadelphia Ridge Elementary School?

625 students attend Triadelphia Ridge Elementary School.

What is the racial composition of the student body?

40% of Triadelphia Ridge Elementary School students are Asian, 40% of students are White, 8% of students are Black, 7% of students are Two or more races, and 5% of students are Hispanic.

What is the student-teacher ratio of Triadelphia Ridge Elementary School?

Triadelphia Ridge Elementary School has a student ration of 14:1, which is equal to the Maryland state average of 14:1.

What grades does Triadelphia Ridge Elementary School offer ?

Triadelphia Ridge Elementary School offers enrollment in grades Prekindergarten-5 (Supplemental Virtual).

What school district is Triadelphia Ridge Elementary School part of?

Triadelphia Ridge Elementary School is part of Howard County School District.