Well, the closest to Tewantin is of course Tewantin. Whether it is the best, I don't know. Peregian Springs school is bp newer, but a hike from Tewantin. Eumundi school gets a great wrap, but it too is a fair way from home if you live at Tewantin. Think about where school friends will live, the location of after school activities and inter-school competitions, transport issues and parent networks etc in addition to school ratings, as together they make up the package that is the school experience. I think you might find Tewantin is just fine.