It seems that way. I've looked at the video in the classroom and the press conference held at the school. There was no teleprompter nor podium in the classroom. Obama and Duncan sat on stools in front of the class. The podium and the teleprompter were used in the press conference, not in the class.
Unfortunate we have to check these things. After the President hands out lab coats to doctors at press conferences, uses soldier's coffins or cadets as a back drop, uses a teleprompter almost all the time and says he won't raise the middle class' taxes in speeches it isn't hard to see why there's a problem.
It seems you're caught up in that rabid partisianship. Because when you look at it as unbiasedly as probably what is possible, you see that:
1. Campaign promises rarely match governance. In this Obama is probably no better or worse that Dubya, Clinton, Bush I, Reagan, Ford, or Nixon.
2. All presidents have used military coffins, soldiers, cadets, aircraft carriers, tanks, etc as a backdrop at one point or another. Now you can subscribe that use to whatever conspiracy theory you like.
3. Since teleprompters have been invented, they have been used. Bush didn't use it as much as he should have. Clinton, being the policy wonk, didn't need it much, but did use it at times.
If it were up to me, I'd say use it and screw up as little as possible because I don't what to have other 'interpret' what the POTUS is saying because he said it so poorly that it could mean practically anything.