Think, too, of science centers, zoos, Sunday School (or similar) classes, summer day camps (some can be 1/2 day), historical museum camps, parks and rec sports programs, etc. There are tons of programs where your son can get socialization and time to learn both academic and non-academic things over the next 1 1/2 years. I know many K teachers tend to think that it is extremely important for kids to come into K having had a preschool experience, but if one day you get flack for not sending him, a variety of experiences where he participated without you always in the room should satisfy them.
