Buffy and Spike secretly meet up in a graveyard and he helps her with her homework.

Buffy discusses an essay she has to write for her English Literature class with Spike in a graveyard in Puddinhead's English lesson on EF.

https://dark-solace.org/elysian/viewstory.php?sid=3445&chapter=1

flow

flow The one I'm thinking is definitely longer and I'm pretty sure it's season 2 or 3? (My memory is terrible :/ )

I've actually never read this one though, so I'll do that, thanks ^^

Hi,

In Port in a Storm by DauntlessGrace, Spike gets Dalton to help Buffy with her homework and they meet in a cemetery.

Summary: A response to a challenge by Mia Vaan. A young Buffy ends up getting lost in LA and is almost raped. A certain blond vampire ends up coming to her rescue, but can't bring himself to feed off of her. He ends up driving her home and takes off into the night. Buffy is called as the slayer not long after that, and both of them get quite the shock when he shows up in Sunnydale looking for a cure for Drusilla. Starts out pre-series, but the majority of it will be a season 2 setting. 

Hannora
I'm about halfway through so far and I don't think it's this one. Iirc, they meet up secretly kind of hanging out in a graveyard, more than once, and he helps her with homework. I should've put more details in the original post but I've read so many fics they all kind of bleed together so I don't want to mistake anything.