Denver (AP) The Colorado Supreme Court heard arguments today on a law that increases school funding by freezing property tax rates that were expected to fall.
Opponents told the justices the 2007 law is an unconstitutional tax increase because it didn't go to voters.
Proponents say the plan didn't need to go to a vote because voters had already agreed to give schools more money.
Attorney John w. Mill, representing the Colorado Department of Education, said voters in 174 of the state's 178 school districts already voted to allow their districts to keep all money that otherwise would have to be refunded under the Taxpayer's Bill of Rights, or TABOR Amendment to the state constitution.
The judges didn't immediately rule.