San Antonio Independent School District v. Rodriguez
San Antonio Independent School District v. Rodriguez, 411 U.S. 1 (1973), was a case in which the Supreme Court of the United States held that San Antonio Independent School District's financing system, which was based on local property taxes, was not a violation of the Fourteenth Amendment's equal protection clause.
Source: Wikipedia — San Antonio Independent School District v. Rodriguez (CC BY-SA 4.0)