When I actually have my son (not due until early May), he'll go to Springing Up CDC in Raymore. I liked the director when I toured and have heard good things from other parents that have taken their kids there. It's right behind Raymore City Hall.
I also heard good things about the center off the 163rd St. Exit in Belton (its right off the highway), but the name is escaping me. They are pretty pricey, though.
I don't know about Peculiar, though.