The wizarding world of J.K. Rowling's seven Harry Potter novels is a hidden society of witches and wizards living alongside non-magical people, called Muggles, and kept secret from them by international law. It has its own school (Hogwarts, split into four houses), its own government (the Ministry of Magic, with a court called the Wizengamot and a prison called Azkaban), its own bank run by goblins, its own money, and a magic system with firm rules about wands, age and what spells cannot do. Underneath all of it is an argument about blood status: whether wizards born to Muggle families are equal. That argument is what the whole series is really about.

This guide covers the books, not the films or later spin-offs, and it contains spoilers for all seven.

A hidden society with a secrecy law

The basic structure is simple. Magical people exist in every country. They hide from Muggles because of the International Statute of Wizarding Secrecy, which in the story was agreed centuries ago after long persecution. Breaking it, by doing magic openly in front of Muggles, is a serious offence, and the Ministry employs people whose job is to modify the memories of Muggles who see too much.

Secrecy explains the world's oddities: wizards dress badly when they try to blend in, and Arthur Weasley, who works in the Ministry office for the Misuse of Muggle Artefacts, is fascinated by plugs. The hidden entrances to everything (a pub that Muggles walk past without noticing, a platform between platforms 9 and 10, a red telephone box that is really a lift) are the world's architecture of secrecy.

Hogwarts and the four houses

Hogwarts School of Witchcraft and Wizardry was founded about a thousand years before the story by four witches and wizards, each of whom gave their name to a house. Students arrive at eleven, stay for seven years, sit their O.W.L. exams in fifth year and N.E.W.T.s in seventh, and are sorted into a house on their first night by the Sorting Hat.

The houses compete for the House Cup through points awarded and taken away by teachers, and through Quidditch. Two details matter for anyone writing about the books. First, the Hat takes the student's own wishes into account: Harry is nearly put in Slytherin and asks not to be. The series keeps returning to the idea that choices define a person more than abilities do. Second, Slytherin's founder wanted to admit only students from wizarding families, which is the historical root of the blood-status prejudice that runs through all seven books.

How magic works

Magic in the books is an inborn ability. You are either magical or you are not, and it can appear in children of Muggle parents (Hermione) or fail to appear in children of wizards (people called Squibs, such as the caretaker Argus Filch).

Wands focus it. A wand is made of a wood and a magical core; the wandmaker Ollivander uses three cores: unicorn hair, phoenix feather and dragon heartstring. The wand chooses the wizard, in Ollivander's phrase, and wands can change allegiance when their owner is defeated, which becomes the key to the final book. Harry's wand (holly, phoenix feather) and Voldemort's (yew) share cores from the same phoenix, which is why their wands react strangely when they duel.

Spells are incantations plus wand movement. Most have Latin-sounding names. Older students learn non-verbal spells, cast without speaking, from sixth year.

There are limits. Food cannot be conjured from nothing (it can be multiplied or summoned if it already exists). The dead cannot truly be brought back. Love, and in particular a mother's sacrifice, produces a protection that Voldemort does not understand, which is how Harry survives as a baby.

Some magic is outlawed. Three spells are called the Unforgivable Curses: the Imperius Curse (control), the Cruciatus Curse (torture) and the Killing Curse. Using any of them on a person earns a life sentence in Azkaban.

Age matters. Witches and wizards come of age at seventeen. Before that, magic outside school is restricted by law and the Ministry can detect spells cast near underage wizards. At seventeen they can also take the test to Apparate, the instant travel from one place to another.

Getting around. Besides Apparition there are brooms, the Floo Network (travel through fireplaces using powder), Portkeys (objects enchanted to carry whoever touches them to a fixed place), the Knight Bus, and the Hogwarts Express from King's Cross.

The Ministry of Magic

The British wizarding government is the Ministry of Magic, located underground in London and led by the Minister for Magic. Across the series the office passes from Cornelius Fudge to Rufus Scrimgeour, then to Pius Thicknesse, who is controlled by the Imperius Curse during Voldemort's takeover, and finally to Kingsley Shacklebolt.

The Ministry is divided into departments, including:

• Magical Law Enforcement, which includes the Auror Office (dark wizard catchers) and the office that polices misuse of Muggle objects.
• Magical Accidents and Catastrophes, which repairs magical incidents and modifies Muggle memories.
• Regulation and Control of Magical Creatures, which covers beasts, beings and spirits, and has an office for goblin relations.
• International Magical Co-operation, which deals with other magical governments and organised the Triwizard Tournament in book four.
• Magical Games and Sports, and Magical Transportation.
• The Department of Mysteries, where secret research happens and prophecies are stored.

The Wizengamot is the wizarding high court, where Harry is tried for underage magic in the fifth book. Azkaban, the prison, is a fortress on a remote island far out to sea, guarded by dementors, creatures that feed on happiness, until they abandon the Ministry and side with Voldemort.

The Ministry is much discussed for a reason. It is shown as slow, vain and willing to deny an obvious danger, in book five, because the truth is politically inconvenient. Then, in book seven, it is taken over from within and begins registering Muggle-born witches and wizards and stripping them of their wands. Many readers treat it as the series' study of how institutions fail.

Money, banks and other beings

Wizarding money comes in three coins: gold Galleons, silver Sickles and bronze Knuts. There are seventeen Sickles to a Galleon and twenty-nine Knuts to a Sickle, an intentionally awkward system. The money is kept at Gringotts, the bank in Diagon Alley run by goblins.

The world also contains other intelligent beings who are not treated as equals. Goblins resent that wizards forbid them to carry wands. Centaurs refuse to be governed by the Ministry. House-elves are bound to serve wizarding families without pay, and freed only if their master gives them clothing. Hermione's elf-rights campaign, S.P.E.W., is played partly for comedy, but the books take the injustice seriously.

Blood status and the war

The central conflict is about who counts as a real wizard. Wizards describe themselves as pure-blood (wizarding families only), half-blood (mixed ancestry) or Muggle-born. A slur for Muggle-born wizards is used by characters like Draco Malfoy, and the books treat it as exactly the kind of word it is.

Lord Voldemort, born Tom Riddle, is himself a half-blood, yet leads the Death Eaters in a movement of pure-blood supremacy. Opposing him is the Order of the Phoenix, a secret group founded by Albus Dumbledore.

Two pieces of magic structure the final books:

• Horcruxes. Voldemort splits his soul and hides the pieces in objects (a diary, a ring, a locket, a cup, a diadem and his snake Nagini), so that he cannot be killed while they survive. A piece also lodged in Harry, unintentionally. Destroying them is the plot of book seven.
• The Deathly Hallows. Three legendary objects: the Elder Wand, the Resurrection Stone and the Cloak of Invisibility, which Harry inherited from his father.

Key places, mapped

If you would rather watch than read, here is a two minute drawn overview of the same world: the hidden society and its secrecy law, the Ministry, Hogwarts and the houses, Voldemort and the Horcruxes.

Make your own version for class

A school presentation or book report on the series works best when it picks one question rather than summarising everything. Good questions: Is the Ministry of Magic a functioning government? Is the Sorting Hat fair? How do the books treat house-elves? What does the series say about prejudice through blood status?

A question like that has a shape you can draw (an institution with arrows of power, a scale of fairness), and how to illustrate abstract ideas covers how to find it. Two rules before you start. Use your own drawings, not film stills or fan art you found online, since those belong to someone else. And quote the books sparingly, with chapter references, rather than pasting long passages; your teacher wants your analysis, and short quotations are what fair use and fair dealing generally allow for criticism and review.

1. 1

   Choose one question

   Pick a question you can answer in three to five minutes, such as whether the Ministry fails its citizens in books five and seven. A whole-world summary is too big for a class video.

2. 2

   Write the script with evidence

   Four to six short paragraphs: your answer, two or three pieces of evidence from the books with book and chapter numbers, a counter-argument, and your conclusion. At 150 words a minute, 600 words is four minutes.

3. 3

   Paste it into openCanviz

   Choose Keep my wording so the narration is your own analysis, and set a target length. Painted or poster styles suit literature; the drawings are original, so you are not borrowing anyone's images.

4. 4

   Check names and details

   Pause on each scene. Drafted drawings and labels can get names, house colours or book numbers wrong. Fix any scene in the editor before you present.

5. 5

   Follow your school's rules

   Check whether AI tools are allowed and say which ones you used if asked. The script is the assessed part, so write it yourself. See /blog/how-to-make-a-video-for-a-school-project for more on this.

For more on turning a book into a short video, see how to turn a book summary into a video.

Common questions

Where is Hogwarts? The books place it in a remote, mountainous part of Britain reached by a long train journey north from London. Rowling has since said it is in Scotland.

How many Horcruxes did Voldemort make? He intended six, to split his soul into seven parts: the diary, the ring, the locket, the cup, the diadem and Nagini. Harry became an unintended seventh.

Why is the Ministry so bad at dealing with Voldemort? In the books it is shown as more concerned with its own reputation than with the truth. In book five it denies Voldemort's return for most of the year, and in book seven it is taken over from within.

Is it fine to use Harry Potter for a school project? Yes. Writing about and analysing a book is normal schoolwork. Draw your own visuals and keep quotations short and cited.