As of 2015[update], the enrollment was 276 students: 61 Lower School (age 3 pre-kindergarten through 5th grade), 75 Middle School (6th through 8th grades), and 140 Upper School (high school).
History
Chase was a co-educational school formed by the merger of two single-sex schools. The first was a girls' school established in 1865 as Collegiate Institute for Young Ladies, later St. Margaret's School for Girls. The second was a boys' school established in 1912 as the McTernan School for Boys. Upon merging in 1972, the combined school was called St. Margaret's-McTernan.[2] The unified name was meant to appeal to both school communities.[5]
Circa 2004-2005 a "School Name Committee" was determining whether to and how to change the school's name.[6] The school leadership wanted a name that showed secularism as the school was at that point secular.[5] The institution was renamed to Chase Collegiate School in 2005.[2] All members of the school's board of trustees had voted to rename the school.[5]
On October 2, 2017, the school announced that it had been purchased by York Education Group, a for-profit entity which owns multiple schools.[7]
The school closed in August 2020 before the 2020-2021 school year could begin, during the COVID-19 pandemic in Connecticut. The school stated that the pandemic caused the closure.[8] By 2021 the campus was sold to Area Cooperative Educational Services (ACES), an organization that operates magnet schools
.[9] ACES operates "ACES at Chase" at the former Chase Collegiate campus.[10]
