The plaintiffs are a small group of parents statewide and a conservative group promoting school choice. They want the courts to declare the school finance system unconstitutional due to inefficiency.

Papers were filed Friday in the 200th Judicial District Court in Austin.

Four other lawsuits charge that the school finance scheme approved by the state Legislature is not equitable in how it distributes funding to school districts.

This latest litigation is meant to intervene on those previously filed and may eventually be combined with them. But it asks the courts to examine how education funding is spent rather than simply if it is distributed fairly among school districts.

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