I think this is an awesome news! He is happy, he is motivated and he is learning! That's all you can ask for. As long as she keeps him engaged and he learns then all is well. I say you may even want to e-mail the teacher and say how glad you are to see the attitude change in DS.
DS6 likes awards too. Give him a computer game in which he can earn a certificate every few levels or keep track of his score and you are all set. If it makes you feel better this week DS6 made me write flash cards with English and Latin/Greek words and use them to play a memory game.
