Greendale Playschool 6015 Clover Ln, Greendale, WI53129 Greendale Playschool is a heavenly place for any small child, offering toys, singing, clapping and snacks throughout the…More day. The playschool is a private institution that offers Pre -3 and 4K programs and is located in the Greendale Community Church building. Students come and go throughout the day. Depending on the program a class size is anywhere from eight to 20 children. Some teachers have been at the school for nearly 20 years.