More than 250 school districts challenging the way the state provides funds for schools has countered Attorney General Jay Nixon’s request that their lawsuit be delayed until the legislature has a shot at fixing the system.The school districts say they’ll agree to Nixon’s request if a judge first declares the present system unconstitutional. The districts also want a judge in Jefferson City to order the legislature to fix the problem immediately. Nixon charges the school districts want a ruling without evidence being presented. A hearing is scheduled for this afternoon in the Cole County Courthouse before Circuit Judge Richard Callahan.