Marine Science Magnet High School of Southeastern Connecticut was the first public high school in Groton, Connecticut, in the United States. It opened on September 1, 2011.

In the academic year 2012–2013 there were 178 students enrolled in grades 9–11, of which 94 were male and 84 female. Approximately 93% were ethnically white, and 7% Hispanic.

In 2023 the school earned the National Blue Ribbon Award and was ranked #1 in Connecticut by U.S. News & World Report.

Notes School Name: Marine Science Magnet High School of Southeastern. U.S. Department of Education: Institute of Education Sciences: National Center for Education Statistics. Accessed April 2015.

Marine Science Magnet High School of Southeastern Connecticut: About the School. Marine Science Magnet High School of Southeastern Connecticut. Accessed April 2015.