You're not too worried about accidentally finding out something it's illegal to know. You think there's generally a good reason for it if something's been banned, so odds are you're not about to find huge troves of forbidden knowledge in a school library.
It'd be interesting if you did, but... if commonly available information was enough to tell you about things you're not supposed to know, then clearly it hasn't been hidden well enough. So long as you know when to stop, everything should be just fine.
"I'll help you," You tell Nutmeg, because it's not like you had anything else to do to begin with. "I think it's the class in particular that's important- they're supposed to have done something, a long time ago- so maybe an old class list? If we can find one, I mean." Homerooms are tricky. Students come and go, arriving at the school and then leaving again, and only the teacher remains constant from year to year. Graduation lists are simple enough to track down, but you'd probably need at least five years worth of lists to find all the students, and you still wouldn't be able to sort them out from the rest.
You know the information has to have been kept someplace, but that was centuries ago. Even if they're still around, you aren't sure where those records would have been kept. But this class was supposedly important, so maybe there's a chance?
"I think the library has a few old yearbooks," Caramel suggests. "I'm not sure if it has the year you'd be looking for, but it'd be a start."
He's right, that would be helpful. The school's big enough it'd have to sort out students by class or be completely useless. And even if you can't find the exact year, you might still be able to find a few names if it's within three or four years.
Of course, then you'd have to figure out when everyone graduated... but that's something to think about later.
Right now, you're just glad you've found something to do.
Thankfully, the hardest task is finding where the yearbooks are kept. There actually is a book from the correct year, sitting on a nearby table, bearing the marks of having been flipped through many, many times.
One section in particular seems to have gotten much more attention than the rest of it- corner folded down, both ways, looking for all the world like it's wanted to just fall off for a very long time now.
That page, conveniently enough, happens to be Miss Madeleine's class. Her picture has the Starsign of Night displayed next to it, beneath a stylized picture of a Light Spirit, leading to the question of how many people actually read the yearbooks, at least when it comes to classes not their own. The students, too, have images of their talents next to them, which makes it easy to read through.
Airsupply, Lemon- A felin next to a Lightning Spirit.
Ashpot, Kale- A human next to an Insect Spirit.
Cheaptrick, Cabernet- A puppet next to a Poison Spirit.
Cracks, Chocolat- You aren't sure what he is, but apparently he can talk to Stone Spirits?
Farmer, Peche- An Envoy of Love with a Love Spirit drawn next to her.
Lakeside, Blueberry- A human girl with a Water Spirit next to her. You're starting to notice a pattern...
Lumberyard, Cassis- A human who was apparently a disciple of the Blade Spirits.
Maplewood, Pistachio- You already knew what he looked like, but you aren't sure you realized he talked to the Wood Spirits before.
Mintblue, Candy- A female human next to a Wind Spirit... Or, rather, a Wind sticker.
Nighthawk, Ganache- The presence of a Dark Spirit comes as no surprise. It's what his family does, after all.
Pintail, Kirche- A human with a Fire Spirit next to his picture.
Rainbow, Cider- There is, of course, a Beauty Spirit there, as listening to Raspberry told you there would be.
Scorenote, Arancia- Given her name, the presence of a Sound Spirit next to her picture doesn't surprise you at all.
Tearclown, Olive- You aren't sure this human was actually old enough to go to school... but then, she could talk to the Beast Spirits, and maybe that's all that mattered.
Ketchup- There's no picture next to her, for some reason.
Mustard- He doesn't have a talent displayed, either.
Mokka- The Starsign of Erd, underneath a Machinery Spirit. Just as you knew there would be.
You sort of wonder why Mokka's the only one with a Starsign marked- Double Talents are incredibly rare, you weren't actually sure they existed outside of robots until you met Miss Madeleine, but seeing every kind of spirit and no Starsigns that would have been taught about... from a Double Talented teacher, that seems sort of strange.
But homerooms are voluntary, and so this tells you nothing about the class itself. Nutmeg seems to be trying to figure out if anything is worth taking notes about. You actually think you might have an idea where to start...
[ ] Didn't the name 'Kale' come up before?
[ ] Why does this book have a sticker in it?
[ ] Sir Mustard and Miss Ketchup don't have their talents listed... Could that mean something?
[ ] You've actually encountered a lot of people who were in this class.
[ ] ...Didn't Blueberry Lakeside go missing at one point?