The supreme court ruling in united states v. virginia, which held that exclusion of females was unconstitutional, involved denial of admission to a:

The US vs Virginia supreme court case dealt with the ability of females to be admitted to a military institute. Before this case, the Virginia Military Institute was an all male school. After hearing the case, the Supreme Court voted 7-1 to get rid of this admissions requirement. The Supreme Court argued that this policy was a violation of the 14th amendment. An important part of the 14th amendment includes the equal protection law, which says that citizens must be treated equally in the eyes of the law. This means that a women can not be barred from going to a military institute based on her gender.

They said that the world was flat