Cunningham The Series has had crossovers with School Of Fun and Brian The Series.
Brian The Series/PS222 CrossoverEdit
A special three part episode titled Brian Returns To Cunningham; The School Of Fun conisted of both Brian and SOF. The first and second parts were the only parts with Brian in it and two parts with PS222 in it.
PS222: School Of Fun CrossoverEdit
In the season two episode School Of Bad Luck the cast of PS222 made few appearences but was a crossover. Sean loses his lucky shark tooth and the gang must work with PS222 to find it. Isabelle and Leah were the only ones to make appearances as main cast members.