First: I am US Citizen, inquiring about US study though open to study abroad. I'm in my last year of my Physics degree, and like many people would like to go to do my Ph.D in Physics. However, my GRE and GPA are only mediocre and I'm concerned that I would have difficulty getting into a reputable Ph.D program. My GPA is 3.2 and my Physics GRE 580. My current University offers a joint BS/PSM program. I've prepared to enter the program by carefully selecting my Upper division Physics electives but always thought of this as a Plan B and have yet to officially apply. My questions are, exactly, 1. Will doing my PSM (Nanoscience) enhance my chances of entering a reputable Physics program like Stanford or Caltech? 2. Will I still have to submit GRE scores when I already have a Master's? (Generally) 3. Is the PSM independently useful or is it hype like a Bachelor's in Interdisciplinary Studies? 4. Is a Ph.D from a less reputable but very competent school useful in the job market?