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Lyme-Old Lyme High School

Q: Is Lyme-Old Lyme High School a good school?

Lyme-Old Lyme High School ranks 22 nd of 135 Connecticut high schools. SchoolDigger rates this school 4 stars out of 5.

Public Grades 9-12

22^nd

SchoolDigger Rank ?

of 135 Connecticut High Schools

Better than 84% of Connecticut high schools

Summary

Lyme-Old Lyme High School is a small public high school in Old Lyme, Connecticut, serving 367 students in grades 9–12 as part of Regional School District 18. The school continues to post strong academic results: 80% of 11th graders met ELA proficiency and 72.9% met science proficiency, both well above state averages. Math is the standout — on the 2024–25 SAT, 70.9% of students were proficient, more than double the state average of 31.1% and well ahead of nearby East Lyme High School (48.9%) and Waterford High School (57.5%). The district ranks 22nd out of 153 Connecticut districts and spends roughly $22,213 per student, supporting a favorable 9.6-to-1 student–teacher ratio.

However, the latest data reveals areas of concern. Chronic absenteeism has climbed to 19.8%, above the state average of 16.4% and more than triple the rate at Old Saybrook Senior High School (6.0%). The four-year graduation rate of 92.9% is solid but trails several comparable schools, including Westbrook High School (97.6%), The Morgan School (97.5%), and Valley Regional High School (97.4%). These trends help explain why the school's state ranking slipped from a top-5 position in recent years to 22nd for 2025–26.

The closest comparison is East Lyme High School, just 6.8 miles away, which now ranks 15th in the state with a higher graduation rate (95.5%) and significantly lower chronic absenteeism (12.8%). Given Lyme-Old Lyme's very low economic-disadvantage rate (12.8% free/reduced-price lunch), the attendance gap stands out as particularly unusual. Overall, Lyme-Old Lyme remains an excellent, well-funded school with a genuine math advantage, but improving attendance and reversing the recent academic dip are the key areas to watch.

367

Students ?

9.6

Student/teacher ratio ?

$28,834

Per pupil spending ?

12.8%

Free/reduced lunch eligible (2024-25) ?

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%

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

At a glance

▬ Ranking trend: Holding steady — 88th percentile in 2013 → 84th in 2026

Strengths

✓Test scores above the Connecticut average (76% vs 46% meeting standards)

✓Ranks in the top 16% of Connecticut high schools

✓Small classes — about 10 students per teacher

Students meeting standards (2025-2026) ?

This school76%

District avg76%

Connecticut avg46%

22^nd of 135

Connecticut public high schools ?

Top 16%▼ down 5 pts since 2018

From top 12% (2018) to top 16% (2026)

See the entire ranking list of Connecticut High Schools →

★★★★★

SchoolDigger rating ?

22^nd of 153Regional 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
2026	85.6	22 of 135	83.7%	★★★★☆
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
2026	86.0	16 of 111	85.6%	★★★★☆
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
2026	78.6	33 of 115	71.3%	★★★★☆
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
2026	82.3	15 of 107	86.0%	★★★★☆
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

White (2026)86th percentile~ school

Female (2026)86th percentile~ school

Male (2026)71st percentile-12 vs school

By subject vs Connecticut (2025-2026) ?

English Language Arts80%+25 vs state

Science73%+22 vs state

★

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Schools Near Lyme-Old Lyme High School

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Ranking:

E Elementary M Middle H High A Alternative P Private

School	Students/Teachers	Ranking (2026)	Ranking (2025)	NGSS Science (2026)	SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)	SBAC Mathematics (2026)	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%)	85.6	22^nd of 135 public high schools	83.7%	95.7	4^th of 141 public high schools	97.2%	18		72.9	80.0								$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%)	59.1	56^th of 135 public high schools	58.5%	77.2	35^th of 141 public high schools	75.2%	21		48.4	65.6	33.3							$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%)	88.1	15^th of 135 public high schools	88.9%	86.5	19^th of 141 public high schools	86.5%	4		80.5	81.8	46.9							$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)		1097.0	73.0								$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%)	67.2	45^th of 135 public high schools	66.7%	70.7	45^th of 141 public high schools	68.1%			63.5	68.0	31.1							$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%)	72.4	37^th of 135 public high schools	72.6%	80.7	29^th of 141 public high schools	79.4%	8		57.1	67.1	46.8							$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%)	59.5	54^th of 135 public high schools	60.0%	64.5	50^th of 141 public high schools	64.5%	4		56.3	60.6								$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%)							(n/a)		15.8									$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)		29.0									$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)	30.8	1091.0			27.9	25.0	2508.0	9.8	9.4	2456.0	$24,173

Frequently Asked Questions about 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 district is Lyme-Old Lyme High School in?

Regional School District 18

How many students attend Lyme-Old Lyme High School?

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

Is Lyme-Old Lyme High School a good school?

Lyme-Old Lyme High School ranks 22^nd of 135 Connecticut high schools. SchoolDigger rates this school 4 stars out of 5.

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.

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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Latest Connecticut data All new data »

2020–21 through 2023–24 attendance data & graduation rates (updated)NewNov 2, 2026

2019–20 graduation rates (updated)NewNov 1, 2026

2017–18 through 2025–26 immunization rates (updated)Oct 19, 2026

2024–25 through 2025–26 attendance data & graduation ratesAug 31, 2026

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 (2026)				Ranking (2025)				NGSS Science (2026)		SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)			SBAC Mathematics (2026)			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/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	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 English Language Arts 8th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 7th Grade	SBAC Mathematics 8th 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%)	85.6	22^nd of 135 public high schools	83.7%		95.7	4^th of 141 public high schools	97.2%	18		72.9	80.0								$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%)	59.1	56^th of 135 public high schools	58.5%		77.2	35^th of 141 public high schools	75.2%	21		48.4	65.6	33.3							$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%)	88.1	15^th of 135 public high schools	88.9%		86.5	19^th of 141 public high schools	86.5%	4		80.5	81.8	46.9							$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)		1097.0	73.0								$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%)	67.2	45^th of 135 public high schools	66.7%		70.7	45^th of 141 public high schools	68.1%			63.5	68.0	31.1							$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%)	72.4	37^th of 135 public high schools	72.6%		80.7	29^th of 141 public high schools	79.4%	8		57.1	67.1	46.8							$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%)	59.5	54^th of 135 public high schools	60.0%		64.5	50^th of 141 public high schools	64.5%	4		56.3	60.6								$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%)								(n/a)		15.8									$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)		29.0									$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)	30.8	1091.0			27.9	25.0	2508.0	9.8	9.4	2456.0	$24,173