(Portland, OR) -- Portland Public Schools could face closure of five to ten schools next year, because of a 50-million-dollar budget shortfall. This is on top of a 22-million-dollar budget gap this year. Superintendent Dr. Kimberlee Armstrong said she'll present the proposed closures to the board in November. Declining enrollment and higher costs for the Public Employee Retirement System are among the reasons for the budget hole. A program to increase enrollment for kindergarten students saw a slight gain last fall.