Chamberlain International School is a coeducational therapeutic boarding and day school in Middleborough, Massachusetts. The school says it was founded in 1976 and serves students ages 11 to 22 from Massachusetts, across the United States, and internationally (Chamberlain International School, school history).

NATSAP lists Chamberlain as a full member therapeutic boarding and day school. Public materials describe services for students with learning, emotional, behavioral, and psychiatric challenges, including autism spectrum disorder, ADHD, anxiety, depression, mood disorders, and other needs (NATSAP).

In 2016, WGBH reported on runaways and state findings of neglect and abuse at Chamberlain. The school told WGBH that it had made improvements and that safety was its priority (WGBH).