Unaware of his magical abilities he went of to Eton before being accepted by Hogwarts. In his second year he was petrified by the Basilisk and people guessed Harry was responsible, seeing he is a parseltounge. He was then stuck in the hospital wing for a long time. In his 5th year he Hannah, Susan, Ernie went to the Hogs head pub and agreed to join D.A. He was paired with Luna Lovegood and she occasinally disarmed him. When Voldemort took over the ministry Justin either went into hiding or he fled the country. It is unknown weather he participated in the Battle Of Hogawarts.