“Weird but good” was how students described their first week at Lagunitas Community School, the new unified elementary program of the Lagunitas School District. After the board voted last spring to merge its longtime Montessori and Open Classroom programs, a parent-teacher team has met regularly to pull cherished tenets of each track into a single school. Classes are now twice the size, with around 20 students each, and the transition team says it’s been a…