Mitchell is stepping down after three years as the Indians head coach to become the new head football coach at Sherwood Christian Academy.
A formal announcement is expected Friday at Sherwood Baptist Church and Mitchell informed his players at Albany High of his new job.
Mitchell was the defensive coordinator at Dougherty when the Trojans were AAA state runner-up in 2005.
He was hired to take over the struggling Albany High football program in 2006.
The Indians ended a 23-game losing streak in 2008 and finished 2-8 and the Indians are looking for a big season in 2009 with many players returning from that team.
The timing for Mitchell's move is not great with summer practice starting in about two months.
The Sherwood Christian job became open in late April when Ted "Rock" Knapp resigned because he believed he could not handle the physical demands of coaching due to his cancer treatments.
Dougherty County School System athletic director Johnny Seabrooks anticipates starting the search for an interim head coach for Albany High next week.
Seabrooks says a search will not begin until the Dougherty County Board of Education accepts Mitchell's resignation at their Monday meeting.
Seabrooks says Albany High principal Shelia Marshall has told him she will recommend the Board accept Mitchell's resignation.