In 1973, in a 5-4 ruling, the U.S. Supreme Court decided that there was no federal right to equal school funding in the Constitution.

That was more than 40 years ago, and today Patty Rodriguez, a teacher in the same school district in San Antonio where that fight started, says nothing has changed.

Her father, Demetrio Rodriguez, filed the suit. It became a landmark case, a turning point when the focus around school funding shifted from the federal government to the states.

Any day, the Texas Supreme Court is expected to rule on a separate yet very similar case. This time, some 600 rich and poor districts alike have signed on to sue the state of Texas, complaining the system for funding schools there doesn't work.

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