Looks like "Class" will be in session starting in fall 2016, at least, that's the plan according to Executive Producer and YA author Patrick Ness.
The recently announced "Doctor Who" spin-off series executive produced by Ness, Brian Minchin and "Doctor Who" showrunner Stephen Moffat takes place in contemporary London and focuses on students at the Coal Hill Secondary School, where current Doctor Who companion Clara Oswald teaches. However, in an interview with Entertainment Weekly, Ness confirmed that Clara will not be involved in the upcoming spin-off and while some fans have been asking him to bring in parts of the "Doctor Who" mythology, Ness revealed he plans to "show the world new stuff."
"I want to have new things that maybe we haven't seen before. That's my goal," Ness told EW. "That's what I'm aiming for -- shock you with something new. Something like the Weeping Angels, which I think are great, are brand new. Steven Moffat invented them a couple seasons ago. There's not going to be any weeping angels on 'Class,' but I'm just saying that they're something new to the Doctor Who universe that are just awesome, and I would like to do that."
"The Rest of Us Just Live Here" author also said that he looks forward to bringing his YA experience into the project.
"The idea is to take everything that I love about YA, which is the great breadth of it and the great depth of it and its fearlessness about the emotional stuff and its fearlessness about emotional truth, and the way that it takes teenage characters seriously as complex human beings, and just put that on television in the Doctor Who universe, and that sounded very, very exciting to me."
"Class" will film in and around Wales in Spring 2016. "Doctor Who" Series 9 starring Peter Capaldi as the Twelfth Doctor premiered September 19 on BBC.