It was my first phone interview with Google. I called in on time. The interviewer had a strong British accent, but luckily I had no problem communicating with him as a foreigner. I don't remember if he asked anything about my schoolwork, but there might have been a little bit about my previous work, followed by a set of technical questions. The interview lasted for 45 minutes, and everything went well. I just have no idea why I could not continue the application process.