I have seen so many different Harry Potter stories that have become Jumpchains that I am issuing a challenge for them.
Requirements
Each year of your education must take place in a different Harry Potter Universe
For each universe you fill out the corresponding Jumpchain document.
If you take a companion along then they replace their counterparts in each jump just like you would if you replace a character in your first year.
Suggestions
You should not be a Drop-In.
You must make yourself as close to any character as possible if you replaced them.