How did Mrs. Olinski pick her team in The View From Saturday?

E.L.
Konigsburg's tells the story of a group of students participating in an
academic competition. Typically members of academic quiz teams are chosen by proving their
intelligence and the speed with which they can answer questions. Mrs. Olinski is more concerned
with the makeup of her team as a unit than she is with the their quiz experience or skills. Each
member of her team has demonstrated their kind hearts, which leads Mrs. Olinski to believe they
will work well as team members. She also tries not to reward students who may be smarter or
quicker but are cruel to their classmates. Mrs. Olinski briefly considers Hamilton Knapp, but
once she discovers he had lead some cruel chants during Annie, she decides
to invite Julian to join the team instead.