1, Denver, 413 U.S. 189 (1973), was a United States Supreme Court case that claimed de facto segregation had affected a substantial part of the school system and therefore was a violation of the Equal Protection Clause.

In this case, black and Hispanic parents filed suit against all Denver schools due to racial segregation.

The decision on this case, written by Justice William J. Brennan, was key in defining de facto segregation.

[citation needed] However, two months later after these plans were introduced, a new superintendent was voted in to power over the incumbent.

[citation needed] Less than two weeks later, a group of parents brought suit against the Denver School District, alleging that the entirety of the Denver school system was guilty of racial segregation and was therefore in violation of their 14th Amendment right to Equal Protection of the laws.