What effect did "the wave" have on Robert?

The ‘class loser,’ Robert gets bad grades and dresses sloppily. Mr. Ross believes Robert doesn't try hard because he is afraid of failing to live up to the example set by his overachieving brother, Jeff. After Mr. Ross implements the Wave, Robert thrives as an accepted part of the group. The boy who used to be shy and unhappy, suddenly becomes a leader and enforcer.