(Portland, OR) -- Portland Public Schools officials say a counter-proposal is being reviewed by the Portland Association of Teachers. The district says the counter-proposal was sent to the union for consideration Monday afternoon. This comes after the Portland Association of Teachers accused the school board of rejecting a tentative agreement to end the teachers' strike, but Portland Public Schools says there was no tentative agreement. The teachers strike has been underway since November 1st, causing students to miss ten days of classes so far.