There was a lot of "run around", and they thought very highly of themselves despite being a medium sized engineering company. Their requirements were not clear from the start, and are very high for their level. A red flag is a IQ question.

I'm currently at school, last semester in December, Lutron contacted me say they wanna have an phone interview with me, frankly, I was busy preparing my finals, it was just not a good time. I didn't prepared well for the interview (but achieve good academic grades though, don't know if I made the right decision). Anyway, they didn't offer me this position. The questions are all behavior questions. I can still remember some of them, here they are: What you know about Lutron's current Project? Why you pick your major in undergrad? Do you try something else before you pick that major? Besides academic study, what else do you do in you undergrad? What did you learn from it? Why you choose to pursue master’s degree instead of starting your career right away? Why you choose ** University for your graduate education? Talk about your working experience, how you demonstrate your value in it? Please prepare for those questions, they may ask you too. Good luck!