(Olympia, WA)  --  Washington State Treasurer Jim McIntire is proposing a five-percent state income tax to fully fund public education.  McIntire's proposal would eliminate the state property tax, limit local school levies, trim the state sales tax to five-and-a-half percent, and add the five-percent flat state income tax dedicated to education.  Families of four with a household income of 50-thousand dollars or below would be exempt.  McIntire calls it a comprehensive funding plan that addresses Washington's educational needs.