This content was extracted from Wikipedia and is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License
A sister school is usually a pair of schools, usually single-sex school, one with female students and the other with male students. This relationship is seen to benefit both schools. For instance, when Harvard University was a male-only school, Radcliffe University was its sister school. The sister school concept as a single-sex school began to change as several institutions adopted coeducational environments starting in the 1970s due to the increasing awareness or consciousness about sex bias and discrimination.