Serenity, Give the principal all the facts, the marriage, the sep, the family stress, how the judicial system was firm with him in meting out appropriate punishment, your son's latching on to several good male role model/mentors and his very real need to maintain structure right now.
In other words, its all true, but pour it on.
Gardener
"My soul, be satisfied with flowers, With fruit, with weeds even; but gather them In the one garden you may call your own." Cyrano deBergerac