Why would they even infer, in his recent post, that school is coming back this semester? I've done a reasonable amount of research and I think it's safe to bet that New Orleans will not be a habitable city for 4-6 months. If you disagree let me know, I was arguing with my friend about this hours ago. I feel that it will be 4 weeks until the levees are fixed, then they need to get the electricity back to pump the water out. That'll be another 4 weeks. Then, they will need to clear the debris so they can fix the water mains and gas pipes (say 2-4 weeks for this). After this, the city will be somewhat habitable for workers, but all the buildings will still be damaged. Once water, electricity and gas are restored, workers can come in a fix all the windows, roofs and structural damage to the hotels and public facilities. This could take years, but hopefully some stuff can get done in a month. Then, I'd come back, stay in a hotel and evaluate the damage to my house. It would take another month (minimum) or two to fix the windows and roof that were at least mildly affected. Then we can move back in and start over.
You do the math.
ADDITION: New Orleans will not go "back online" until the whole city is habitable. The roadways will just be too clogged and infrastructure will be too strained trying to operate Tulane without having the rest of New Orleans available. How can I prove this? Tulane is the largest employer of people in New Orleans. Many of these people probably do not and will not have houses for quite some time. We've gotta have both sides of the city at least partly habitable to be back at school. Moreover, WE need places to live, and its just gonna take time to fix uptown, even if they are able to fix up the city in half the time of my predictions.