Things JK Rowling has said about Harry Potter on twitter
US Colleges
Literature
Presidents
X-MEN
100

The tutition fee for Hogwarts

None, it's free

100

College named after the first Jewish justice on SCOTUS

Brandeis University

100

The Innocents (1961) is based off of this famous novella

The Turn of the Screw

100

After learning this language on their honeymoon in China, Herbert Hoover and his wife would often talk in this language when they didn't want others to understand them.

Mandarin 

100

The original five X-Men

Cyclops, Iceman, Angel, Beast, Marvel Girl

200

This character is not white

Hermione

200

The Third Oldest University in the US

John's University

200

The book that in the Peanuts movie, Peppermint Patty mistakenly called Leo's Toy Store by Warren Peace. 

War and Peace

200

Skinny dipping was a favored past time of this US president, who legend has it was cornered into an interview with journalist Anne Royall when she caught him swimming nude. 

President John Quincey Adams 

200
Illyanna Rasputina aka Magik is the sister of this X-man

Colossus

300

The way Voldemort is supposed to be pronounced

Voldemor

300

This game was played for the first time between 2 colleges in November of 1869

Football

300

Amy Tan's "Joy Luck Club" is structured in a way to mimic this game that the characters in it play

Mahjong

300

Name at least 2 Presidents who are not Lincoln or Kennedy that have died in office 

William Henry Harrison, Zachary Taylor, James A. Garfield, William McKinley, Warren G. Harding and Franklin D. Roosevelt

300

The son of Jean Grey/Madelyne Pryor and Scott Summers

Nathan Christopher Summers/Cable

400

Ron's Patronus

Jack Russell Terrier

400

George H.W Bush, George W. Bush, and William Howard Taft all belonged to this secret society at Yale

Skulls and Bones Society 

400

Mark Twain, though already a nome de plume, would occasionally use this pen name instead. 

Thomas Jefferson Snodgrass

400

This President would put a handkerchief over his wife's face whenever she had a seizure over dinner with guests, so as to make the visitors feel more comfortable

President McKinley

400

This issue marks the first appearence of Jean Grey as Phoenix

X-Men #101

500

The One Jew At Hogwarts

 Anthony Goldstein

500

At MIT you can earn this type of certificate for completing archery, fencing, pistol (air pistol or rifle), and sailing.

Pirate Certificate

500

The man often called Japan's Shakespeare

Chikamatsu Monzaemon

500

Woodrow Wilson's face is on this banknote

$100,000 bill 

500

The writer of the X-Men for 17 years and made them popular 

Chris Claremont