Brian Kelley resigned effective June 15, according to Wake County schools spokeswoman Lisa Luten.
Kelley was suspended with pay since May 25, when the video of the incident surfaced online.
#Breaking - Just learning an Apex High School Teacher has been suspended after video surfaces showing him choking a student. #WCPSS says an investigation is underway. #ABC11 pic.twitter.com/DJxQZB5Gmf— Elaina Athans (@AthansABC11) May 25, 2018
Kelly, who was hired in 2004, taught Healthful Living and coached track.