Effect: Jack gives in to his mother and agrees to welcome August to his new school. Cause?

Jack's mother continues to encourage Jack to help out, insisting that it is important to treat Auggie fairly despite how he looks. Finally, Jack agrees. He realizes that while there will always be kids who are jerks in general, even generally nice kids such as Jamie can be mean to people like Auggie -- which means that Auggie does not stand a chance in middle school.