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Lyme-Old Lyme High School

Public Grades 9-12

4^th

SchoolDigger Rank ?

of 141 Connecticut High Schools

Better than 97% of Connecticut high schools

Summary

Lyme-Old Lyme High School is a public high school serving grades 9-12 in Old Lyme, Connecticut. Part of the Regional School District 18, the school has 392 students and has consistently ranked among the top high schools in Connecticut over the past decade, with a current statewide ranking of 4 out of 141 high schools.

Lyme-Old Lyme High School's academic performance is exceptional, with 91.9% of 11th graders proficient or better in SAT/English Language Arts and 70.9% proficient or better in SAT/Math, significantly outpacing the state averages of 58% and 31.1%, respectively. The school's graduation rates are also consistently high, ranging from 88.4% to 98.1% over the past few years, well above the state average. Additionally, the school's chronic absenteeism rate is relatively low, ranging from 8.0% to 20.0% in recent years, compared to the state average of around 12.8%.

Compared to nearby schools, Lyme-Old Lyme High School stands out. For example, New London High School has only 11.7% of 11th graders proficient or better in SAT/English Language Arts, a stark contrast to Lyme-Old Lyme High School's 91.9%. Additionally, Lyme-Old Lyme High School spends significantly more per student ($22,213 in 2018-2019) compared to nearby schools like The Morgan School ($17,857) and New London High School ($16,021), which may contribute to the school's strong academic performance.

367

Students ?

9.6

Student/teacher ratio ?

$28,834

Per pupil spending ?

12.8%

Free/discounted lunch ?

69 Lyme St.
Old Lyme, CT 06371

(860) 434-1651

District: Regional School District 18

Feeder schools for Lyme-Old Lyme High School:

Elementary:	Lyme Consolidated School
	Mile Creek School
Middle:	Lyme-Old Lyme Middle School

Racial breakdown:

White:

80.9%

Hispanic:

8.2%

Asian:

5.2%

See top rated Connecticut high schools

Compare Lyme-Old Lyme High School to nearby high schools!

At a glance

▲ Ranking trend: Improving — 91st percentile in 2012 → 97th in 2025

Strengths

✓Test scores above the Connecticut average (81% vs 46% meeting standards)

✓Ranks in the top 3% of Connecticut high schools

✓95% graduate in 4 years — above the Connecticut average (89%)

Students meeting standards (2024-2025) ?

This school81%

District avg80%

Connecticut avg46%

4^th of 141

Connecticut public high schools ?

Top 3%▲ up 18 pts since 2015

From top 20% (2015) to top 3% (2025)

See the entire ranking list of Connecticut High Schools →

★★★★★

SchoolDigger rating ?

13^th of 156Regional School District 18 among Connecticut districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	95.7	4 of 141	97.2%	★★★★★
2024	93.5	7 of 145	95.2%	★★★★★
2023	92.8	8 of 142	94.4%	★★★★★
2022	94.1	5 of 139	96.4%	★★★★★
2021	92.4	10 of 200	95.0%	★★★★★
2019	93.8	5 of 121	95.9%	★★★★★
2018	90.7	14 of 121	88.4%	★★★★☆
2015	77.9	40 of 196	79.6%	★★★★☆
2013	79.5	23 of 193	88.1%	★★★★☆
2012	80.3	17 of 188	91.0%	★★★★★
2011	80.9	15 of 189	92.1%	★★★★★
2010	78.2	25 of 186	86.6%	★★★★☆
2009	78.4	26 of 176	85.2%	★★★★☆
2008	80.2	15 of 176	91.5%	★★★★★
2007	77.8	29 of 176	83.5%	★★★★☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	92.4	7 of 104	93.3%	★★★★★
2024	84.4	20 of 102	80.4%	★★★★☆
2023	88.5	11 of 103	89.3%	★★★★★
2021	90.4	15 of 189	92.1%	★★★★★
2019	90.9	4 of 84	95.2%	★★★★★

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	94.6	2 of 111	98.2%	★★★★★
2024	92.6	8 of 100	92.0%	★★★★★
2023	90.8	7 of 100	93.0%	★★★★★
2022	91.7	5 of 102	95.1%	★★★★★
2021	91.9	9 of 182	95.1%	★★★★★
2019	86.8	14 of 80	82.5%	★★★★☆
2018	88.5	12 of 78	84.6%	★★★★☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	97.7	1 of 175	99.4%	★★★★★

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	93.5	6 of 116	94.8%	★★★★★
2024	88.6	12 of 116	89.7%	★★★★★
2023	91.6	7 of 116	94.0%	★★★★★
2022	91.7	11 of 117	90.6%	★★★★★
2021	86.1	18 of 155	88.4%	★★★★☆
2019	90.2	10 of 113	91.2%	★★★★★
2018	84.0	17 of 105	83.8%	★★★★☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Special Education (2021)99th percentile+4 vs school

Male (2025)98th percentile~ school

White (2025)95th percentile~ school

Female (2025)93rd percentile-4 vs school

By subject vs Connecticut (2024-2025) ?

English Language Arts92%+34 vs state

Science80%+32 vs state

Math71%+40 vs state

★

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Schools Near Lyme-Old Lyme High School

School	Students/Teachers	Ranking (2025)	Ranking (2024)	NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	SBAC English Language Arts (2025)	SBAC Mathematics (2025)	Per Pupil Expenditures (2025)
Lyme-Old Lyme High School	Public	9-12	69 Lyme St.	Old Lyme	06371	Lower Connecticut River Valley Planning Region	Regional School District 18	No	No	No	No	(860) 434-1651	367	38	9.6	12.8%	297 (80.9%)	3 (0.8%)	30 (8.2%)	19 (5.2%)	0 (0.0%)	0 (0.0%)	15 (4.1%)	95.7	4^th of 141 public high schools	97.2%	93.5	7^th of 145 public high schools	95.2%	3		80.2	91.9	70.9					$28,834
Old Saybrook Senior High School	Public	9-12	1111 Boston Post Rd.	Old Saybrook	06475	Lower Connecticut River Valley Planning Region	Old Saybrook School District	No	No	No	No	(860) 395-3175	338	41	8.2	22.5%	261 (77.2%)	2 (0.6%)	48 (14.2%)	12 (3.6%)	0 (0.0%)	1 (0.3%)	11 (3.3%)	77.2	35^th of 141 public high schools	75.2%	75.8	37^th of 145 public high schools	74.5%	2		59.7	77.5	42.3					$31,540
East Lyme High School	Public	9-12	30 Chesterfield Rd.	East Lyme	06333	Southeastern Connecticut Planning Region	East Lyme School District	No	No	No	No	(860) 739-6946	890	90	9.9	24.3%	645 (72.5%)	17 (1.9%)	90 (10.1%)	88 (9.9%)	4 (0.4%)	1 (0.1%)	43 (4.8%)	86.5	19^th of 141 public high schools	86.5%	80.7	25^th of 145 public high schools	82.8%	6		69.8	82.4	48.9					$25,597
Westbrook High School	Public	9-12	156 McVeagh Rd.	Westbrook	06498	Lower Connecticut River Valley Planning Region	Westbrook School District	No	No	No	No	(860) 399-6214	166	26	6.2	47.0%	107 (64.5%)	1 (0.6%)	56 (33.7%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (1.2%)							(n/a)									$42,166
Valley Regional High School	Public	9-12	256 Kelsey Hill Rd.	Deep River	06417	Lower Connecticut River Valley Planning Region	Regional School District 04	No	No	No	Yes	(860) 526-5328	429	46	9.3	27.3%	351 (81.8%)	5 (1.2%)	47 (11.0%)	6 (1.4%)	0 (0.0%)	0 (0.0%)	15 (3.5%)	70.7	45^th of 141 public high schools	68.1%	56.9	64^th of 145 public high schools	55.9%	19		59.2	73.1	35.6					$31,338
Waterford High School	Public	9-12	20 Rope Ferry Rd.	Waterford	06385	Southeastern Connecticut Planning Region	Waterford School District	No	No	No	Yes	(860) 437-6956	713	64	11.0	30.6%	525 (73.6%)	16 (2.2%)	80 (11.2%)	41 (5.8%)	3 (0.4%)	1 (0.1%)	46 (6.5%)	80.7	29^th of 141 public high schools	79.4%	84.7	21^st of 145 public high schools	85.5%	8		55.6	77.3	57.5					$29,429
The Morgan School	Public	9-12	71 Killingworth Tpke.	Clinton	06413	Lower Connecticut River Valley Planning Region	Clinton School District	No	No	No	No	(860) 664-6504	473	49	9.6	40.0%	322 (68.1%)	5 (1.1%)	118 (24.9%)	18 (3.8%)	0 (0.0%)	0 (0.0%)	9 (1.9%)	64.5	50^th of 141 public high schools	64.5%	66.2	51^st of 145 public high schools	64.8%	1		59.7	68.0	30.5					$26,789
New London High School	Public	9-12	20 Chester Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	No	No	Yes	(860) 437-6400	605	44	13.6	91.2%	35 (5.8%)	97 (16.0%)	428 (70.7%)	5 (0.8%)	2 (0.3%)	1 (0.2%)	37 (6.1%)	2.4	141^st of 141 public high schools	0.0%				(n/a)		6.4	11.7						$23,639
Science and Technology Magnet Pathway for High School Grades	Public, Magnet	9-12	20 Chester Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	Yes	No	Yes	(860) 447-6400	171	13	13.2	78.4%	31 (18.1%)	35 (20.5%)	74 (43.3%)	3 (1.8%)	1 (0.6%)	0 (0.0%)	27 (15.8%)							(n/a)		18.8							$23,639
New London Visual and Performing Arts Magnet Pathway	Public, Magnet	6-12	36 Waller Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	Yes	No	Yes	(860) 449-6800	268	24	11.0	81.3%	47 (17.5%)	47 (17.5%)	115 (42.9%)	3 (1.1%)	3 (1.1%)	0 (0.0%)	52 (19.4%)							(n/a)	43.8				30.2	29.8	9.5	17.4	$24,173

Frequently Asked Questions about Lyme-Old Lyme High School

How many students attend Lyme-Old Lyme High School?

In the 2024-25 school year, 367 students attended Lyme-Old Lyme High School.

What schools feed into Lyme-Old Lyme High School?

Lyme-Old Lyme High School is fed by the following schools:

Elementary : Lyme Consolidated School
Elementary : Mile Creek School
Middle : Lyme-Old Lyme Middle School

What is the racial makeup of Lyme-Old Lyme High School?

Students at Lyme-Old Lyme High School are 81% White, 8% Hispanic, 5% Asian, 4% Two or more races.

What district is Lyme-Old Lyme High School in?

Regional School District 18

Is Lyme-Old Lyme High School a good school?

Yes! Lyme-Old Lyme High School is one of the best high schools in the state. It ranks 4^th of 141 Connecticut high schools.

Rate Lyme-Old Lyme High School!

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CTConnecticut High School Rankings

CTConnecticut District Rankings

Schools in Old Lyme, CT

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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Connecticut Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

School													Students/Teachers											Ranking (2025)				Ranking (2024)				NGSS Science (2025)		SAT English Language Arts (2025)	SAT Math (2025)	SBAC English Language Arts (2025)		SBAC Mathematics (2025)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	NGSS Science 8th Grade	NGSS Science 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th Grade	SBAC English Language Arts 6th Grade	SBAC English Language Arts 7th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 7th Grade	Total
Lyme-Old Lyme High School	Public	9-12	69 Lyme St.	Old Lyme	06371	Lower Connecticut River Valley Planning Region	Regional School District 18	No	No	No	No	(860) 434-1651	367	38	9.6	12.8%	297 (80.9%)	3 (0.8%)	30 (8.2%)	19 (5.2%)	0 (0.0%)	0 (0.0%)	15 (4.1%)	95.7	4^th of 141 public high schools	97.2%		93.5	7^th of 145 public high schools	95.2%	3		80.2	91.9	70.9					$28,834
Old Saybrook Senior High School	Public	9-12	1111 Boston Post Rd.	Old Saybrook	06475	Lower Connecticut River Valley Planning Region	Old Saybrook School District	No	No	No	No	(860) 395-3175	338	41	8.2	22.5%	261 (77.2%)	2 (0.6%)	48 (14.2%)	12 (3.6%)	0 (0.0%)	1 (0.3%)	11 (3.3%)	77.2	35^th of 141 public high schools	75.2%		75.8	37^th of 145 public high schools	74.5%	2		59.7	77.5	42.3					$31,540
East Lyme High School	Public	9-12	30 Chesterfield Rd.	East Lyme	06333	Southeastern Connecticut Planning Region	East Lyme School District	No	No	No	No	(860) 739-6946	890	90	9.9	24.3%	645 (72.5%)	17 (1.9%)	90 (10.1%)	88 (9.9%)	4 (0.4%)	1 (0.1%)	43 (4.8%)	86.5	19^th of 141 public high schools	86.5%		80.7	25^th of 145 public high schools	82.8%	6		69.8	82.4	48.9					$25,597
Westbrook High School	Public	9-12	156 McVeagh Rd.	Westbrook	06498	Lower Connecticut River Valley Planning Region	Westbrook School District	No	No	No	No	(860) 399-6214	166	26	6.2	47.0%	107 (64.5%)	1 (0.6%)	56 (33.7%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (1.2%)								(n/a)									$42,166
Valley Regional High School	Public	9-12	256 Kelsey Hill Rd.	Deep River	06417	Lower Connecticut River Valley Planning Region	Regional School District 04	No	No	No	Yes	(860) 526-5328	429	46	9.3	27.3%	351 (81.8%)	5 (1.2%)	47 (11.0%)	6 (1.4%)	0 (0.0%)	0 (0.0%)	15 (3.5%)	70.7	45^th of 141 public high schools	68.1%		56.9	64^th of 145 public high schools	55.9%	19		59.2	73.1	35.6					$31,338
Waterford High School	Public	9-12	20 Rope Ferry Rd.	Waterford	06385	Southeastern Connecticut Planning Region	Waterford School District	No	No	No	Yes	(860) 437-6956	713	64	11.0	30.6%	525 (73.6%)	16 (2.2%)	80 (11.2%)	41 (5.8%)	3 (0.4%)	1 (0.1%)	46 (6.5%)	80.7	29^th of 141 public high schools	79.4%		84.7	21^st of 145 public high schools	85.5%	8		55.6	77.3	57.5					$29,429
The Morgan School	Public	9-12	71 Killingworth Tpke.	Clinton	06413	Lower Connecticut River Valley Planning Region	Clinton School District	No	No	No	No	(860) 664-6504	473	49	9.6	40.0%	322 (68.1%)	5 (1.1%)	118 (24.9%)	18 (3.8%)	0 (0.0%)	0 (0.0%)	9 (1.9%)	64.5	50^th of 141 public high schools	64.5%		66.2	51^st of 145 public high schools	64.8%	1		59.7	68.0	30.5					$26,789
New London High School	Public	9-12	20 Chester Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	No	No	Yes	(860) 437-6400	605	44	13.6	91.2%	35 (5.8%)	97 (16.0%)	428 (70.7%)	5 (0.8%)	2 (0.3%)	1 (0.2%)	37 (6.1%)	2.4	141^st of 141 public high schools	0.0%					(n/a)		6.4	11.7						$23,639
Science and Technology Magnet Pathway for High School Grades	Public, Magnet	9-12	20 Chester Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	Yes	No	Yes	(860) 447-6400	171	13	13.2	78.4%	31 (18.1%)	35 (20.5%)	74 (43.3%)	3 (1.8%)	1 (0.6%)	0 (0.0%)	27 (15.8%)								(n/a)		18.8							$23,639
New London Visual and Performing Arts Magnet Pathway	Public, Magnet	6-12	36 Waller Street	New London	06320	Southeastern Connecticut Planning Region	New London School District	No	Yes	No	Yes	(860) 449-6800	268	24	11.0	81.3%	47 (17.5%)	47 (17.5%)	115 (42.9%)	3 (1.1%)	3 (1.1%)	0 (0.0%)	52 (19.4%)								(n/a)	43.8				30.2	29.8	9.5	17.4	$24,173