Major SPOILER warning: The ending of Avengers: Endgame is a big focus of this article. DON'T read this until you've seen the movie. You have been warned!
Avengers: Endgame is here, and while the movie is busy destroying every box office opening record, fans are still recuperating from its massive ending. Tears were shed, laughs were had and the battle was won. The MCU was left unquestionably changed following the events of the film, and the one movie where we could and most definitely should see the repercussions of the finale is Spider-Man: Far From Home.
The Web-Slinger's sequel is the first movie after Avengers: Endgame and it's also the final movie of Phase 3. If there was anywhere we would see the aftermath of Endgame, it's in this movie, because it means that Far From Home will have to address the direct effects of the Snap and where it leaves Peter Parker and all his classmates.
Okay, spoiler time.
In Avengers: Endgame, the Avengers are successfully able to acquire all of the Infinity Stones and build their own Infinity Gauntlet. The Hulk, being the only one who can take the full power of the stones, uses the Gauntlet to bring back everyone who was snapped out of existence at the end of Avengers: Infinity War.
Black Panther, Scarlet Witch, The Guardians of the Galaxy and, of course, Spider-Man are among the people brought back to life, but the catch is that five years have passed since they were dusted. To them, no time has passed at all, but the rest of world had to learn to move on, and that probably includes public school systems.
Endgame hints that the world was in pretty terrible shape, but there's no indication that school was stopped. While Peter Parker was wiped off the face of the Earth, some of his classmates definitely weren't, and so they must have completed high school by the time he was resurrected.
That's why it gets tricky for Far From Home, because now it has to address who was and wasn't snapped, and how school works now that half of all teenagers missed out on an education. If it doesn't address the Snap at all, then that's extremely odd.
Assuming that school went on and kids graduated (the acceptance rate for colleges must have skyrocketed in those five years), Far From Home should have a pretty different cast from Spider-Man: Homecoming. Thanks to trailers, I have a pretty decent idea which of Peter's friends were snapped.
There are really only four kids other than Peter who can be considered the main high school cast. Those characters are Ned, Michelle Jones, Flash Thompson, and Betty Brant. Of those, only Betty didn't have that big a part in Homecoming, but it looks like that has changed a bit in Far From Home.
Each of those kids are in Far From Home on the school trip to Europe, so it's probably safe to assume they were all snapped. The trailers don't show any other familiar school kids like the ones on the debate team, so we can guess that they all graduated. I would be surprised if any of these kids were important down the line, but they are all actually real deep-cut Spider-Man references.
For example, one of the kids on the debate team is named Abe Brown. In the comics, this character is actually a vigilante known as Black Tiger, and he's the brother of Hobie Brown, a slightly more well known character who's the original Prowler. Another character, Cindy Moon, was bitten by the same radioactive spider that gave Peter his powers in the comics. She becomes the hero Silk, but there's no indication that happened in the MCU.
Abe, Cindy and the rest of the debate team are either extremely difficult to spot or just aren't in the Far From Home trailer, but I'm thinking they aren't in the movie at all. Maybe they just didn't get to go on the field trip, but it seems like too much of a coincidence that all the tertiary characters have been left out. The Snap would certainly explain the absence.
Otherwise, it would also be extremely weird if Peter's entire class wasn't affected by the Snap. It's mathematically impossible that the whole cast of the Spider-Man movies got off scot free. The events of Infinity War and Endgame are too massive to ignore, and Far From Home is the first movie from the viewpoint of the (mostly) regular citizens. It's a great opportunity to show that Endgame's conclusion has far-reaching effects.
It wouldn't necessarily be that hard a thing to deal with either. The movie just has to explain the status quo in the beginning and then it can get to the summer fun, Elementals and whatever else is going on in Far From Home. Yes, having a whole scene of the group dealing with the fact that they were dead for five years would be great drama to watch, but that's heavier material than I think people are looking for in a Spider-Man movie.
There can just be a scene in the beginning between Peter and Aunt May where they do some light exposition dumping about how Peter and some of his class are still in the same grade after being gone for five years.
Of course, all of this is assuming that Far From Home takes place after Endgame. It could be set before Infinity War and then the Snap won't factor into it all. That's a 'get our of jail free card' if there ever was one, but then whatever the next Spider-Man movie is will have to deal with the issue of the Snap. It's unavoidable, so Marvel might as well just deal with it now and get it over with.
Ultimately, it's a good thing for Far From Home to address the Snap. It helps to explain how the world works now that Thanos has come and gone, and it sets the status quo for Peter moving forward. Marvel likes the high school setting for Spider-Man and it makes sense that it'd want to keep him there for as long as possible. I don't expect Far From Home to dig too deeply into it, but an explanation would certainly be helpful and serve as a great way to show how this universe is moving post in a post-Endgame world.
We'll find out what's happening one way or the other when Spider-Man: Far From Home swings into theaters on July 2.