Twelve-year-old Derek wants to train his pet monkey, who is going to be a service animal, to help Umberto, a new student who uses a wheelchair, but Umberto would rather steal Derek's cartoon ideas. Interest Level: 3-6 Reading Level: 5.6 ATOS Book Level: 5.3 AR Interest Level: MG AR Points: 4 AR Quiz: 159175EN Reading Counts Level: 5.6 Reading Counts Points: 8 Lexile Measure: 860.