Das fliegende Klassenzimmer (The Flying Classroom)
: a novel for children / Erich Kästner. Illustrated by Walter Trier. - 166th printing - Hamburg [et. al.] : Dressler [et.al.], 2009. - 174 pages : Illustrated
The boys from the boarding school against the boys from the local secondary school. With Erich Kästner telling the story, this tale of feuding schools naturally keeps the reader laughing and ends peacefully amid a giant snowball fight.
Recommended for ages 10 and over.