This is a list of schools in the Wimpy Kid series.
Westmore Middle School
Crossland High School
Tender Cuddles Preschool
Tender Cuddles is a pre-school on a bumper sticker on the back of Greg's Mom's car, that was either Greg's Preschool's name or it was a pre-school Rodrick graduated from; it can't be Manny as Manny is still in pre-school.
Greg's Preschool was a local preschool the Greg Heffley and presumably Rodrick Heffley and Manny Heffley went to. However, in The Last Straw, Susan had a bumper sticker that said "My Child is a graduate of TenderCuddles Pre-School" hinting that it might be the name of Greg's pre-school.
On day 34 it is mistakenly called "St. Patricks".
In The Last Straw it is mentioned that Manny was in his 3rd or 4th pre-school.In Cabin Fever it is said that Manny's pre-school makes all kids wear bicycle helmets during soccer/football matches. In Hard Luck it is mentioned Manny has a friend called Mikey who comes home with and watches TV with.