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High Schools in Regional School District 18

At a glance

DistrictRegional School District 1813^th of 156 Connecticut districtsFull district overview →

School

367

Students

5-star school

Top rankedLyme-Old Lyme High School4^th of 141 Connecticut high schools

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Biggest riser

Lyme-Old Lyme High School up 3 spots statewide this year

Compare Connecticut districts →See the top-ranked Connecticut schools →

Summary:

Regional School District 18 in Connecticut is home to a single high school, Lyme-Old Lyme High School, which has consistently ranked among the top 10 high schools in the state over the past three school years. This standout institution maintains a 5-star rating from School Digger, indicating it is one of the highest-performing schools in Connecticut.

Lyme-Old Lyme High School boasts exceptional academic performance, with 91.9% of its students proficient or better in SAT/English Language Arts, 70.9% in SAT/Math, and 80.2% in NGSS/Science for the 2024-2025 school year. These scores significantly outpace the state averages, showcasing the school's commitment to academic excellence. Additionally, the school's four-year graduation rate of 88.4% in 2022-2023 is above the state average, further highlighting its success in supporting student achievement.

The high level of performance at Lyme-Old Lyme High School is complemented by the school's investment in its students. With a student-teacher ratio of 9.6 and spending per student of $22,213 in the 2018-2019 school year, the school provides a well-resourced educational environment that fosters individual attention and support. Regional School District 18, which Lyme-Old Lyme High School is a part of, is also ranked 13th out of 156 school districts in Connecticut, further emphasizing the district's commitment to delivering a high-quality education to its students.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (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 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th 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

Districts nearby

District	Distance	# of Schools	Statewide Rank
Old Saybrook School District	2.96 mi	3	67^th
Learn	3.25 mi	8
Essex School District	5.17 mi	1	50^th
Westbrook School District	6.26 mi	3	69^th
East Lyme School District	6.3 mi	5	20^th

See the top CT Connecticut districts

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.