Excellent
#72 of 990 schools in CT
Top 7% in state
Lyme-old Lyme High School
High School · Regional School District 18 · Old Lyme, CT
A Regional School District 18 high school where students score 8 points above what's typical for similar communities.
69 Lyme St., Old Lyme, CT 06371
- Math 67% proficient (2022)
- Reading 87% proficient (2022)
- 95%+ 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
View breakdown
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Students at Lyme-old Lyme High School score 77% proficient, which is above what's typical for similar communities (expected: 69%).
2022 EdFacts proficiency
Most recent published year. School vs. CT average.
Trend
↓ DecliningProficiency has fallen 5 points since 2019, to 77% in 2022, across a 14-year record (2009–2022).
Show all 13 years
Multi-year averages used by the rating model: math 76% (multi-year average, 2009-2022) · reading/ELA 86% (multi-year average, 2009-2022)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 26 test records from CT state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
13.5%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Lyme-old Lyme High School sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.
Getting around & local context
- Walk 31Car-Dependent
- Bike 39Somewhat Bikeable
Powered by
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$127,429
Median home value
$468,200
Median rent
$1,891/mo
College educated
56.1%
Homeownership
88.5%
Poverty rate
2.3%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 06371; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
1 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Old Saybrook Senior High SchoolEnrollment path unverified | 7.6 | 9–12 | 4.2 mi | 345 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Regional School District 18
- Schools in district
- 5
- Rank in district
- #3 of 5
- District spending per student
- $28,837NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 4.5%Census SAIPE · 2024
Lyme-old Lyme High School is listed in Regional School District 18; a district label does not verify attendance for an address.
About Lyme-old Lyme High School
Lyme-old Lyme High School is a public high school in Old Lyme, CT, part of Regional School District 18, serving approximately 392 students in grades 9th-12th with a 9.8:1 student-teacher ratio. It holds a MySchoolScout rating of 9.0 out of 10 and ranks #72 of 990 schools in CT. State assessment records show 76% math proficiency (multi-year average, 2009-2022) and 86% reading/ELA proficiency (multi-year average, 2009-2022).
What's said publicly about Lyme-old Lyme High School
Synthesized from public, attributable sources. Updated May 2026.Reviewed for accuracy.
Sources (1)
Frequently asked questions
Common questions about Lyme-old Lyme High School
What grades does Lyme-old Lyme High School serve?
Lyme-old Lyme High School serves students in grades 9th through 12th.
How many students attend Lyme-old Lyme High School?
Lyme-old Lyme High School has an enrollment of approximately 392 students.
What is the student-teacher ratio at Lyme-old Lyme High School?
The student-teacher ratio at Lyme-old Lyme High School is 9.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Lyme-old Lyme High School rank in CT?
Lyme-old Lyme High School ranks #72 of 990 schools in CT.
What is Lyme-old Lyme High School's MySchoolScout rating?
Lyme-old Lyme High School has a current MySchoolScout rating of 9.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Lyme-old Lyme High School?
Based on loaded state assessment records, Lyme-old Lyme High School has 76% math proficiency (multi-year average, 2009-2022) and 86% reading/ELA proficiency (multi-year average, 2009-2022).
Is Lyme-old Lyme High School a charter school?
No, Lyme-old Lyme High School is not a charter school. It is a traditional public school operated by the local school district.
Is Lyme-old Lyme High School a Title I school?
No, Lyme-old Lyme High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Lyme-old Lyme High School?
13.5% of students at Lyme-old Lyme High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 392
- Student-Teacher Ratio
- 9.8:1
- Teachers (FTE)
- 40
- Type
- regular
- Setting
- Fringe Rural
- County
- Connecticut Planning Region 3
- Chronic Absenteeism (SY 2022-23)
- 15.3%
- Phone
- (860) 434-1651
- 4-Year Graduation
- 95%+
- Area population (ZIP 06371)
- 9,855
- Area average commute
- 26.8 min
- Area median age
- 51.6
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 06371; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2022; directory SY 2023–24
Related reading
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