Dive into your creative stream
I’ve seen a lot of posts where there is unhinged science teacher Danny and people compare him to Ms. Frizzle.
But what if it can actually happen?
Like Fenton-Tech is weird enough and Danny (as Ghost King) would have access to all the tech and magic across all dimensions. Not to mention he has a good relationship with someone who is essentially the Lord of Time.
So imagine Gotham Academy Teacher Danny who believes in practical experience and/or first-hand experience.
Mix in a bit of Fenton-tech here, a bit of time magic there and you have a class full of high schoolers who have witnessed things.
It’s a toss up whether people believe them or not because thanks to Clockwork, no time has actually passed when they left.