Wiktionary
pregnancy school
n. A school exclusively for pregnant girls.
Wikipedia
Pregnancy school
Pregnancy school is a type of school in the United States exclusively for pregnant girls. New York City, among other cities and states, opened a series of these schools in the 1960s and moved pregnant girls out of their regular high schools into these special schools. As of May 2007, the city is planning on shutting these schools down due to a history of low test scores and poor attendance.
Pregnancy schools also exist in places such as Chicago, Los Angeles, and Florida, although attendance has been declining in all of them.