Hello. Just joined the site. I'm raising my 9 yr old nephew who was just diagnosed with PDD-NOS. To say the least it's been exhausting, frustrating, and has turned my world upside down. I guess the hardest part of it is the behavior. Last school year was an absolute disaster. I was up at the school every other day. This year they moved him to a new school with a great teacher and he has minimal behaviors but at home he is a nightmare. Argumentative, screams, hollers, tears things us, jumps up and down, fits, and a lot of the times it's over just not getting his way - even though he has had the same rules and consequences for almost 2 years now. How can he control it at school and then meltdown constantly at home? My husband and I have tried everything the drs, psychiatrist, schools have suggested with very little results. Is he just testing us?