I applied through a referral and received a call from HR to schedule a phone interview.

I had several calls from HR to provide my GPA and SAT scores, for some reason.

I had one scheduled for the next week with one of the structural engineers. Two days after the interview, I received a call from HR offering me the intern position.

The engineer mostly asked questions about my resume. I also sent him a presentation of my college projects, which he enjoyed. He asked about my designs, my reasoning, and my material choices.

There were no technical questions unrelated to the experience on my resume. I also have a low GPA (below 3.0), but he did not ask about it because engineers don't seem to care about that. They are primarily interested in relevant experience, skills, and a candidate's ability to learn quickly.