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SCHOOL COMMUNITY·REGIONAL SCHOOL DISTRICT 18·NCES 090354000763

Lyme-Old Lyme High School

69 Lyme St., Old Lyme, CT 06371 · (860) 434-1651 · Lower Connecticut River Valley Planning Region
GRADES 09–12HIGH41-RURALREGULAR SCHOOL367 STUDENTS
·
allk12 Grade
Not graded

This school has no state test results for 2023-24 or 2024-25 to grade, which is common for schools that end before third grade. How grades work

Enrollment
367
High
DISTRICT 256 · STATE 788
Student : Teacher
9.6:1
38 FTE teachers
DISTRICT 12.0:1 · STATE 12.3:1
Free / Reduced Lunch
13%
47 students
DISTRICT 16% · STATE 44%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 98623%
Grade 108824%
Grade 119025%
Grade 1210328%
Student demographics
32%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 26% · STATE 67% · US 70%
White
29781%
DISTRICT 85% · STATE 46% · US 43%
Hispanic
308%
DISTRICT 7% · STATE 32% · US 30%
Black
31%
DISTRICT 1% · STATE 12% · US 15%
Asian
195%
DISTRICT 3% · STATE 5% · US 6%
Two+
154%
DISTRICT 4% · STATE 5% · US 5%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
18350%
Female
18149%

School pathway

Feeds from
Lyme-Old Lyme Middle School06–08
Based on grade levels within Regional School District 18. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Schools most like Lyme-Old Lyme High School

SchoolStudentsLow-incomeProficient
Lyme-Old Lyme High School this school36712.8%N/A
Coginchaug Regional High School
Durham
35615.7%N/A
Haddam-Killingworth High School
Higganum
46613.7%N/A
Oxford High School
Oxford
47617.9%N/A
Tolland High School
Tolland
63916.4%N/A
Old Saybrook Senior High School
Old Saybrook
33822.5%N/A
Matched among Connecticut high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Lyme-Old Lyme High School ranks

Among high schools
MeasureThis schoolIn ConnecticutIn Lower Connecticut River Valley Planning Region
Enrollment
ranked largest first
367#157 of 201#8 of 13
Students per teacher
ranked fewest first
9.6:1#23 of 188#6 of 12
Diversity index
ranked most diverse first
32.3%#163 of 188#7 of 12
Free and reduced lunch
ranked highest share first
12.8%#184 of 196#13 of 13
Enrollment change since 2017-18
ranked steepest decline first
-22.4%#22 of 120#7 of 11
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
367
-83 (-18%) vs 2020
+15% since 1990-91, when it was 318
Student : Teacher
9.6:1
was 10.5:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2536738.29.6:113% (47)
2023-2439240.89.6:114% (53)
2022-2340744.39.2:112% (48)
2020-214504310.5:118% (82)
2017-1847346.310.2:16% (27)
2015-164604210.9:17% (30)
2010-114474110.9:16% (27)
2000-014153611.5:1N/A
1990-913182811.4:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Lyme-Old Lyme High School.

Since 2017-18: students down 22% (473 to 367); teachers down 17% (46.3 to 38.2).

About Lyme-Old Lyme High School

Federal records list Lyme-Old Lyme High School as a high school in Old Lyme, Connecticut. The school enrolls 367 students in grades 9 through 12. High schools in Connecticut average about 788 students, which makes this school 53% below average.

Lyme-Old Lyme High School is one school in Regional School District 18, a system of 5 schools with 1,278 students.

Roughly 81% of students at Lyme-Old Lyme High School are White. Other students are 8% Hispanic, 5% Asian, and 4% multiracial. Lower Connecticut River Valley Planning Region residents are about 81% White, a similar share. On the diversity index, which measures the chance that two random students are from different groups, Lyme-Old Lyme High School scores 32%.

A staff of 38.2 full-time-equivalent teachers puts the student-to-teacher ratio at 9.6:1. The average for high schools in Connecticut, 12.3:1, is higher. The share of students eligible for free or reduced-price lunch is 13%. Across public schools in Lower Connecticut River Valley Planning Region, the average is 32%.

In the wider Lower Connecticut River Valley Planning Region area, the median household earns about $104,428 a year, a bachelor's degree or higher is held by about 46% of adults, and the poverty rate is about 4%. Across Lower Connecticut River Valley Planning Region, 57 public schools serve about 19,075 students.

A public school about 0.1 miles away, Lyme-Old Lyme Middle School, is the closest to Lyme-Old Lyme High School. Inside a five-mile radius, there are 6 other public schools.

NCES assigns Lyme-Old Lyme High School the locale Rural: Fringe, meaning in rural territory close to an urban area.

Since 2020-21, enrollment has fallen 18%, from 450 to 367.

Anyone can start a thread about fundraisers, report cards, and school supplies at Lyme-Old Lyme High School. Parents, students, alumni, and staff are welcome to post.

Lower Connecticut River Valley Planning Region at a glance

View full county profile
Population
175,822
Census ACS
Median income
$104,428
Household, ACS
Bachelor's+
46%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
57
19,075 students

Quick facts

School name
Lyme-Old Lyme High School
District
Regional School District 18
Address
69 Lyme St., Old Lyme, CT 06371
Phone
(860) 434-1651
County
Lower Connecticut River Valley Planning Region
Level
High
Grade range
09–12
Total enrollment
367
Teachers (FTE)
38
Student–teacher ratio
9.6:1
Free and reduced lunch
47 (13%)
Locale
41-Rural: Fringe
NCES ID
090354000763
Charter school
No
Virtual school
No

Related schools

Other schools in Regional School District 18
Other schools in Old Lyme
Nearby schools

Frequently asked questions

About Lyme-Old Lyme High School
What is the total enrollment at Lyme-Old Lyme High School?
Lyme-Old Lyme High School enrolls approximately 367 students in grades 09-12.
What grades does Lyme-Old Lyme High School serve?
Lyme-Old Lyme High School serves grades 09-12.
What is the student-teacher ratio at Lyme-Old Lyme High School?
The student-to-teacher ratio at Lyme-Old Lyme High School is approximately 9.6:1 (38 FTE teachers).
What is the racial breakdown of students at Lyme-Old Lyme High School?
At Lyme-Old Lyme High School, the student body is approximately 81% White, 8% Hispanic, 1% Black, 5% Asian, 4% Two or more.
What district is Lyme-Old Lyme High School in?
Lyme-Old Lyme High School is part of Regional School District 18.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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