I lived in that area a couple years ago and started my son at Small Fry Preschool and Kindergarten at 16 months (It's on the corner of 13th and Birch). It is located in what used to be a house but is now just a school. Gayle, the owner, is wonderful!
By the time he turned 2 he knew his ABC's, seasons, days of the week, months of the year, count to 10, and colors. 2 year olds learned letter and number recognition. 3 year olds learn how to write number and letters and how to spell their name.
2 years later, we now live in Westminster, but I still take him to Small-Fry as he is learning lots and they don't cost an arm and a leg ($140 per week, you provide diapers).