| Lyme-Old Lyme High School | |
| Streetaddress: | 69 Lyme Street |
| City: | Old Lyme |
| State: | Connecticut |
| Zipcode: | 06371 |
| Country: | United States |
| District: | Lyme-Old Lyme Public Schools |
| Principal: | James Wygonik |
| Teaching Staff: | 39.4 (FTE) |
| Ceeb: | 070600 |
| Ratio: | 11.95 |
| Schooltype: | High school |
| Fundingtype: | Public |
| Grades: | 9-12 |
| Hours In Day: | 6 |
| Athletics Conference: | Shoreline Conference |
| Team Name: | Wildcats |
| School Colors: | Blue and white |
| Yearbook: | Lymen |
| Newspaper: | The Osprey |
| Enrollment: | 444 (2021-22)[1] |
| Grade9: | 122 |
| Grade10: | 112 |
| Grade11: | 125 |
| Grade12: | 112 |
| Feeders: | Lyme-Old Lyme Middle School |
Lyme-Old Lyme High School is a public high school in Old Lyme, Connecticut. It serves grades 9 through 12 and is the only high school operated by Lyme-Old Lyme Schools.
A successful 2009 referendum cleared the way for a 15,000-square foot expansion of the school that wrapped up in 2013.[2]
LOLHS athletic teams are nicknamed the Wildcats and compete in the Shoreline Conference.[3] The school fields a co-op football team with Valley Regional High School, nicknamed the Warriors. In 2019, the
| Girls soccer[4] [5] | 2009, 2015, 2016, 2017, 2018 | |
| Girls basketball[6] | 1997, 2009 | |
| Girls gymnastics | 2006 | |
| Girls Tennis | 2021, 2022, 2023 |
Lyme-Old Lyme puts on a fall play and spring musical each year.
Lyme-Old Lyme High School's FIRST Robotics Competition Team 236, "The Techno-Ticks", won the Championship Chairman's Award in 2009.[7]