Carter County Schools interview questions

I was interviewed by 5 different principals from various schools in the county, along with HR people. I was told I had the job and to go to board office to sign paperwork with secretary. I did just that, and she said the formal acceptance would come later in the day via phone call. I waited, and then received an email basically telling me the position was filled by another candidate. I checked the open positions for over a month and the same job was still posted!