10- Sleeps outside movie theaters, is always the first to get the books, reads books daily, and needs them to survive, on the verge of believing magic is real... plus below.
9- Knows just about everything there is to know about Rowling's Wizarding world, has lots of collectibles, reads books more than once a year, circles life around Harry Potter, plus below.
8- Knows a lot, has lots of good theories and ideas, likes to learn more, regular Forum visitor, ideas are coming out their ears, and they express it in a variety of ways. Reads books more or less regularly. Plus below.
7- They might sometimes discuss HP topics with friends and family, and they maybe dressed up once or twice. They have read the books several times and know a fair amount. Plus below.
6- They might express their passion for the series in more subtle ways, write a fanfiction or two, smile when they hear a reference.
5- Just your average fan of a good book.
4- Following the crowd, but not truly appreciating the series for what it is...
3- Fake fan, maybe has it on their reading list.
2- Hasn't read, not a priority.