If you can't afford a traditional preschool, or can't find one with a philosophy that meshes with your own, consider looking for or even founding a cooperative school. These parent-run programs are usually less expensive than other schools (because of the sweat equity that parents contribute) and allow participating families to help decide what kids will learn and how.
 

In a cooperative preschool, parents take turns doing everything from managing the finances to washing the windows to assisting in the classroom. Usually, a professional teacher oversees the classroom, but parent volunteers recruit and hire her, serve as her aides, and help develop the curriculum.
 

Of course, this takes a good deal of time and energy. It's not a commitment to be entered into lightly. But many families believe it's worth it. Aside from the financial benefit and the direct influence over your child's education, you get the opportunity to collaborate with like-minded parents, to observe your child and his peers as they learn and socialize, and even to learn skills that could be valuable in your current or future career.