West Potomac football coach Eric Henderson was informed Wednesday that he was relieved of his duties as coach at the Alexandria school, according to a team parent and confirmed by a school source.

Like all Fairfax County coaches, Henderson operated on a one-year contract. When reached by phone, assistant director of student activities Barb Mahony refused comment. Messages left with Henderson were not immediately returned.

According to Kathryn Tesh, a team parent, team members and parents are planning protests regarding the school decision.

Henderson was hired at West Potomac in 2004 and, after going 1-9 in his first year, guided the Wolverines to a 40-34 record over the next seven seasons.

Led by Henderson’s son, 6-3 sophomore quarterback Caleb Henderson, the Wolverines finished 8-4 last season and qualified for the Virginia AAA Northern Region Div. 6 playoffs for the first time since 2007. West Potomac lost to Westfield, 42-34, in the semifinals.

Caleb Henderson passed for 2,403 yards, 27 touchdowns and just seven interceptions after winning the starting job during the season.

Henderson resigned in 2009 after a tumultuous 2-8 season in which he underwent surgery for kidney stones, but after hearing positive feedback from parents and students opted to return.

“I’m happy to be back,” Henderson told The Post in 2010. “I think it’s all come to [a] good spot and I’m at a good place.”