Random Assignment, Random Ashimement

Woohoo! I now have better job security than I had yesterday. This evening's sample comes from Quasi-Confused in MA. who received the following lecture on experimental designs from their submission:

"We think that the definition of an experimental design is problematic and probably not strict enough. . .Aren't interventions that use randomisation on classroom or school-levels quasi-experimental designs?"

Well Reviewer X, let's have a quick review, courtesy of Yahoo! Answers
So there you have it. Randomization=Experiment, Randomization of classes=Experiment. For more information you can check out Wikipedia here

http://en.wikipedia.org/wiki/Random_assignment

Yes, even Wikipedia got one right.....