BOISE – The League of Women Voters of Idaho is launching a ballot initiative drive to lower Idaho’s sales tax from 6 percent to 5 percent, while eliminating some exemptions and expanding the tax to cover most services.

The changes would raise $424 million more a year that could be spent on schools.

If the measure makes the 2016 ballot, it would give voters a chance to restructure Idaho’s exemption-riddled sales tax system. Idaho’s 6 percent sales tax currently raises about $1.5 billion a year in gross collections, while the amount of exemptions is tallied at more than $2 billion, according to the state Division of Financial Management.