S.R.
My kids go to Forest Park Montessori on Lathrop and have had a good experience. They have a class for 15-24 months old and also a 2-3 year old class. The two best things about the center, in my opinion, are the large playground coupled with a early learning using the Montessori method. The teachers are okay, but nothing outstanding. Overall, it's a safe, happy environment. This is not the absolute best in the area, but adequate in every way and affordable. Might be a good option until your son is old enough for a more formidable pre-school.