There are many Stem schools in D3. Some have already been Mentioned. One that is often overlooked is Rose-Hulman. They are always ranked very high in Engineering. Here is the ranking from US News.
The conference they play in is not exactly know for Rocket Scientists, however it is a Geographic fit. And they do reasonably well in there conference. They may not have the pedigree of the Ivies, they are still one of the better engineering schools.