It's wrong not to help your classmates.
Cassandra and Richard, who is struggling in math, are studying for an exam the rest of their class.
Cassandra wants to adequately prepare of the exam.
Cassandra invites Richard and their other classmates to go over the material as a group.
Cassandra ignores Richard studying alone.
Cassandra and Richard become friends, and they both do well on their test.
While Cassandra does well on the test, Richard fails the math test.