Gov. Scott Walker is urging his Republican colleagues in the state Legislature to use his funding plan for K-12 schools, and not consider a zero-increase proposal being floated by some critics.

Gov. Scott Walker speaks to the news media Monday at Waukesha South High School. Chuck Quirmbach/WPR

Some conservative lawmakers don’t care for the governor’s plan to increase K-12 aid by $649 million over two years. Walker, speaking Monday at Waukesha South High School, urged members of the Legislature’s Joint Finance Committee to use his proposal as a starting point in their deliberations.

“Build off what we invested. This isn’t a blank check, as all the school leaders here know,” Walker said.

“Through all the Act 10 reforms we’ve empowered school districts to put more money in the classroom, to do more with these dollars, and reinforce and reinvigorate some of our best teachers and educators in the state.”

The governor is being criticized for trying to force school districts to make employees pay about 12 percent of their health insurance costs in order to receive the additional state dollars. Walker said he’ll consider letting go of that language.

“Sure, or the…