hey, please stay safe, i kind of forgot you were actually a high school student as i started to ramble on, don't worry about doing all that firsthand research, unless you're just doing it as a fun excuse to practice driving.
you might not be able to tell what school it is anyway, if they renovated the school since then (I mean I'm sure they did, since that is a school in a very wealthy neighborhood, and parents would demand renovations after 21-22 years!). a lot of people attended that school and i'm sure someone will chime in eventually. it is not even remotely urgent, just something i'm curious about, which could be cool to know.
if you do like the episode die hand die verletzt (which may be a classic, but is also one of the creepiest episodes in the entire show, and not appealing to all tastes), you could ask around if you know any people who attended lord byng, and ask them to watch those two eps on netflix and report back. there are also potentially many other episodes it could be, if they only shot one scene at a school or if a school was used as an imitation of a non-school setting. these are just the only ones with an almost entirely high school based plot.
i guess you might even find out the episodes were shot in your own school rather than the one i'm talking about... which would be interesting... but i feel pretty bad for posting this now, because the only way i really endorse you doing this research is if you are also a fan of grimes.
actually the LA thing wasn't really shade, I love LA and I would probably love Vancouver more in some ways but less in other ways, and I've never been there. actually Grimes has done amazing stuff after moving to LA from Vancouver (check out the Art Angels album and see if it makes you interested where she went to school). The X-Files, on the other hand, did not benefit so much from moving to LA. A lot of people blame that deterioration in later X-Files seasons on LA itself, but I don't. Not even the changed look of the show, the overabundance of sunshine, had to ruin it. David Lynch's movies are evidence that LA sunshine can be the most horrifying thing. Mulholland Drive scares me much more than any XF episode. the problem with later XF seasons was bad writing and the loss of the crew that defined the look of the show in its early years. If they'd kept the same crew and writers, they could've maintained quality anywhere, although after six seasons of 20-25 episodes each, you do start to run out of ideas as well. but in a way, moving cities could've actually helped pump new ideas into the show for years to come, if they had better writers to execute it. we've seen with the second XF movie and the season 10/revival last year, that Vancouver doesn't guarantee quality either, hell, even getting the best writers back doesn't guarantee quality if the overall concept and inspiration is no longer there. so as much as I love (what I know of) Vancouver, I don't blame LA for ruining TXF.