YORK, Maine — It will be back to the drawing board for local school officials, after the Maine Department of Education put the kibosh on its proposal to add hours to the school year that would offset snow days. Unless school officials are able to come up with another alternative, it is likely snow days will be tacked on to the end of the school year, as has typically been done. Interim Superintendent Mark McQuillan had wanted to institute what he called the “Monday plan,” adding 30 minutes to the school day each Monday for the remainder of the school year to cover anticipated extra snow days.