US Postal Service interview questions

There was like 50 people there and like 8 interviewers from different stations, takes about 10 min to conclude, they ask you why you want to join and go over your resume.

I applied online in September got phone call in late November for the interview. Interview was just a conversation, not really an interview, said I was over qualified. Only thing the interviewer was concerned about was if I could work the hours since I was still in school. The hours were from 6 p.m. to 6 a.m