This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
(covers information from several alternate timelines)
The learning pits were the site of the thirty-fifth attempt by a group of bullies to illicit an emotional response from Spock. Upon their success, by calling his father a traitor and his mother a Human whore, Spock pushed one of the bullies into a learning pit and physically assaulted him. (Star Trek)
Michael Burnham also attended the Vulcan Learning Center and had to answer questions about Klingons in her dome, which was traumatic for her given that Klingons killed her family. At some point after Burnham began studying at the Center, a bombing devastated the facility. (DIS: "The Vulcan Hello", "Battle at the Binary Stars")