ECE or early childhood education is a growing field of interest in research and in pilot projects. Programs such as Headstart and Early Childhood Development programs are all geared towards providing additional support and education for young preschool age children within particular communities. A school counselor can help identify these programs in your community.
Check with the licensing or accreditation group in your area and find out if the preschool is accredited and/or licensed. In some areas licensing is the only option for preschools, so research the possibilities. The state Education Department should have this information on their website.