The St. Maries school board has set a supplemental levy election for May 16.
The amount, $335,000 each year for two years, is $10,000 less than the previous supplemental levy, which retires this year.
The levy represents about 6 percent of the district's $5.4 million budget. In the 1993-94 school year, the levy comprised almost 10 percent of the budget, said district treasurer Louisa St. John.