Police recruitment for Howard county Maryland ? Should he call?

a friend of mine is waiting to hear if he made the final cut for the police Academy. He has been through all testing. He was told that this week everyone will be hearing form the recruiter with a letter for a NO, Or Phone call for a YES. so far today, friday, he has not heard anything at all. He is stressed. should he call HR to see if the decisions have been made or would that be poor form?