Harry Potter and the Sorcerer's Stone
Harry Potter and the Chamber of Secrets
Harry Potter and the Prisoner of Azkaban
Harry Potter and the Goblet of Fire
Book 5
100

Harry's house at Hogwarts

What is Gryffindor?

100
The day students arrive at Hogwarts

What is September 1st?

100
Hermione's cat

Who is Crookshanks?

100

An event that had not been held for over a century

What is the Triwizard Tournament?

100

Gryffindor prefects

Who are Ron and Hermione?

200

This object decides a student's house

What is the Sorting Hat?

200

The Weasley's flying car injured it

What is the Whomping Willow?

200

Creatures guarding the school during Harry's third year

What are dementors?

200

The three largest European schools of wizardry

What are Hogwarts, Beauxbatons, and Durmstrang?

200

Harry could see these creatures pulling the school carriages for the first time

What are thestrals?

300

First-years arrive at Hogwarts castle in these

What are boats?

300

He blocked the barrier to Platform 9-3/4

Who is Dobby?

300

He assigned the Monster Book of Monsters

Who is Rubeus Hagrid?

300

The new Defense Against the Dark Arts teacher

Who is Alastor Moody or Mad-Eye Moody?

300

The new Defense Against the Dark Arts teacher

Who is Dolores Umbridge?

400

He came up with the idea of the Sorting Hat.

Who is Godric Gryffindor?

400

Harry and Ron didn't get to attend the Welcoming Feast. They ate this instead.

What are sandwiches?

400

Dumbledore announced he was the new Defense Against the Dark Arts teacher

Who is Remus Lupin?

400

They prepare meals for the feast

What are House Elves?

400

Substitute Care of Magical Creatures teacher

Who is Professor Grumbbly-Plank?

500

First student to be sorted

Who is Hannah Abbott?

500

The make and model of Mr. Weasley's car

What is a Ford Anglia?

500
She said, "So we've finally got a Defense Against the Dark Arts teacher who knows his remedies?"

Who is Madame Pomfrey?

500

He fell into the lake during the first-years' traditional crossing 

Who is Dennis Creevey?

500

A password that Neville can finally remember

What is mimbulus mimbletonia?