(Portland, OR) -- The union representing the teachers in Portland Public Schools is proposing a plan to limit in-person classes for some students. The Portland Association of Teachers says a recent survey of its members found half of them are considering leaving the profession altogether, citing long hours and stress. The proposal would change the schedule for high school students, moving them to a four-day schedule with Fridays off and eight periods on all other days. The union is proposing either an early release or late start for K-8 students on those days as well.