Classroom 3C,[4] also known as the Defence Against the Dark Arts Classroom,[5] was where Defence Against the Dark Arts class was taught at Hogwarts School of Witchcraft and Wizardry. It was located off of the Serpentine Corridor[1] on the third-floor of Hogwarts Castle.[2][3][4][5]


An iron chandelier hung from the ceiling, as well as a dragon's skeleton.[6] On one end of the classroom stood a projector that was activated by magic.[7] There was also a blackboard at the front of the classroom. Several desks and tables could be found in the classroom as well as some sets of large windows. The classroom decoration had several changes over the years, spanning from lots of pictures of Gilderoy Lockhart,[8] to skeletons and Shrunken Heads.



Dumbledore teaching in his classroom.

During his early teaching career, a young Albus Dumbledore occupied this classroom in his capacity as the school's Defence Against the Dark Arts teacher. Throughout much of this time, the classroom was home to a number of curious magical instruments that would one day find their way to the Headmaster's study following Professor Dumbledore's appointment as Head of Hogwarts many years later. A gifted instructor, he made good use of the classroom to, among other things, teach students how to handle dark creatures and how to duel.[9]

1988–1989 school year

Professor Rakepick teaching a class

A world-renowned Curse-Breaker who had been originally enlisted by then Headmaster Albus Dumbledore to help investigate the fabled Cursed Vaults and spent the better part of the previous school year searching for them, Patricia Rakepick accepted the former's offer of employment and became a member of the teaching staff. Filling her classroom with an assortment of objects harking back to her many adventures while working for Gringotts Wizarding Bank, most of them Egyptian in origin, she also used it to house a number of dark artefacts that the students would have to identify and counter as part of their studies. An efficient teacher, her first-hand experience encountering Dark Magic throughout her career enabled her to offer her pupils a comprehensive curriculum, teaching everything from handling dark creatures, learning Defensive spells as well as Martial magic.[10]

1989–1990 school year

Bill Weasley teaching a group of sixth year students in this classroom

Defence Against the Dark Arts was taught by a teacher who was considered useless by most students. William Weasley was given permission by Albus Dumbledore to use the classroom to teach Defence Against the Dark Arts to students after lessons were done for the day.[11]

1991–1992 school year

Quirinus Quirrell used a temporary classroom because the third-floor corridor was out-of-bounds.[12]

1992–1993 school year

Gilderoy Lockhart's pictures in the classroom

When Gilderoy Lockhart was the professor, during the 1992–1993 school year, he decorated the room with his own pictures. During the first lesson, he gave a quiz completely irrelevant to the subject and then released a group of boisterous Cornish Pixies for the class to practise. However, due to his ineptitude and the students' inexperience, Lockhart lost control of them, leading the classroom to be demolished, and Lockhart ultimately fled the room with the rest of the students while irresponsibly ordering Harry Potter, Ronald Weasley and Hermione Granger to clear up his mess.[8] After this one fiasco, Lockhart simply read aloud his supposedly great deeds from his textbooks, sometimes reenacting them and usually dragging Harry to play certain degrading roles.[13] Due to this, the students did not learn anything useful about the subject.

1993–1994 school year

Remus Lupin having his first lesson on Boggarts

Remus Lupin taught in the 1993–1994 school year. They studied various dark creatures. The first class was hands-on as they fought a Boggart with the Boggart-Banishing Spell.[14] He also brought a Grindylow to class so that they could observe it. They covered Boggarts, Hinkypunks, Kappas, Red Caps, Vampires and Werewolves in the year.[15][16][17] Their final exam was a practical one, an obstacle course with some of the creatures they had studied throughout the year, which was carried out on the school grounds.[18]

1994–1995 school year

Barty Crouch teaching his class on the Unforgivable Curses

The 1994–1995 school year brought yet another teacher, Barty Crouch Jnr (impersonating Alastor Moody). Although they were only supposed to be learning Counter-curses (per Ministry of Magic regulations), Crouch covered the Unforgivable Curses, demonstrating with spiders.[19] In another lesson, he placed the Imperius Curse on several students in turn until they could learn how to resist the curse.[20] He also taught his class the art of Hex-deflection.[21] Crouch also had a metal jar of worms, as well as a glass container full of bees.[22]

1995–1996 school year

Dolores Umbridge treated her class with dull and meaningless materials

In the 1995–1996 school year, Harry and his fellow students were taught by Dolores Umbridge, who taught theory only with no practical training whatsoever. The book used was Defensive Magical Theory and it discouraged anyone from ever using any form of defensive or offensive spells. The chapters of the book instead focused on negotiation and states that there is no good use for a jinx. Umbridge did not allow the students to discuss the material and certainly not to disagree with it. She also forbade any talking without raising hands, and always requested wands to be put away.[23][24] As one of the methods of retaliation against her tyranny, the moment she enters the classroom she would be greeted by students with ill-coated symptoms of "Umbridge-itis", much to her chagrin.[25]

1996–1997 school year

The 1996–1997 school year brought another teacher, Severus Snape. His sixth year class learned about Dementors, the Unforgivable Curses and Nonverbal spells. Snape imposed his personality onto the room with rather dark decors: curtains drawn over the windows and the room was lit by candlelight, leading to a gloomier atmosphere, and new, gruesome pictures adorned the walls, many of them showing people in pain, sporting grisly injuries or strangely contorted body parts.[26]

Behind the scenes

Classroom 3C as it appears in Harry Potter: Puzzles & Spells

  • In the video game adaptations the classroom used in 1991 is the same as the one used the following years. It is located on the third floor.
  • The film adaptation of Harry Potter and the Prisoner of Azkaban features the Divination classroom, which uses a redecorated version of the same film set as this room. This can be seen clearly when the back of the room is shown to have the same semicircle window and door.
  • In the Nintendo DS video game adaptation of Harry Potter and the Half-Blood Prince, the classroom is shown without the stairs to the Defence Against the Dark Arts professor's office. The reason may be that Severus Snape did not use this office. In the rest of the video game adaptations, you can go up the spiral staircase on the third floor and reach the entrance to the classroom, but you can not enter the room, except in The Order of the Phoenix. In that game you can enter in Umbridge's Office.
  • In the film adaptation of Harry Potter and the Goblet of Fire the set receives somewhat of an overhaul. The antechamber seen in the previous films is removed and replaced by a spiral staircase, which was filmed at the same location as the Divination Stairwell. The door leading into the classroom changes shape, and the window at the back of the classroom is enlarged. A reason for this change may have been due to the Divination Classroom re-using the set and originally featured the same stairwell.
  • In the video game adaptation of Harry Potter and the Goblet of Fire, there is a door at the back of the class near the stairs that leads into a series of backrooms, which in turn lead to a roof top on the outside of the Castle. In these backrooms the trio encounter a series of obstacles which they must clear before they can proceed. This might indicate that teachers can suggest changes to the Castle to match their needs.
  • Despite being shown as being located in either the Hogwarts Turris Magnus or Astronomy Tower, neither of these towers have window patterns that match the windows that are seen on the classroom's interior film set, most notably the semicircular window in the back of the room.


Notes and references

  1. 1.0 1.1 1.2 Marauder's Map replica by the Noble Collection
  2. 2.0 2.1 (Harry Potter and the Half-Blood Prince, Chapter 9 (The Half-Blood Prince) - "An hour later they reluctantly left the sunlit common room for the Defence Against the Dark Arts classroom four floors below [the seventh-floor]."
  3. 3.0 3.1 Harry Potter and the Philosopher's Stone (video game)
  4. 4.0 4.1 4.2 Harry Potter and the Chamber of Secrets (video game)
  5. 5.0 5.1 5.2 Harry Potter and the Prisoner of Azkaban (video game)
  6. Harry Potter and the Chamber of Secrets (film)
  7. Harry Potter and the Prisoner of Azkaban (film)
  8. 8.0 8.1 Harry Potter and the Chamber of Secrets, Chapter 6 (Gilderoy Lockhart)
  9. Fantastic Beasts: The Crimes of Grindelwald - The Original Screenplay
  10. Harry Potter: Hogwarts Mystery, Year 5
  11. Harry Potter: Hogwarts Mystery, Year 6, Chapter 5 (Wherefore Art Thou, Weasleys?)
  12. Harry Potter and the Philosopher's Stone (film)
  13. Harry Potter and the Chamber of Secrets, Chapter 10 (The Rogue Bludger)
  14. Harry Potter and the Prisoner of Azkaban, Chapter 7 (The Boggart in the Wardrobe)
  15. Harry Potter and the Prisoner of Azkaban, Chapter 8 (Flight of the Fat Lady)
  16. Harry Potter and the Prisoner of Azkaban, Chapter 9 (Grim Defeat)
  17. Harry Potter and the Prisoner of Azkaban, Chapter 10 (The Marauder's Map)
  18. Harry Potter and the Prisoner of Azkaban, Chapter 16 (Professor Trelawney's Prediction)
  19. Harry Potter and the Goblet of Fire, Chapter 14 (The Unforgivable Curses)
  20. Harry Potter and the Goblet of Fire, Chapter 15 (Beauxbatons and Durmstrang)
  21. Harry Potter and the Goblet of Fire, Chapter 28 (The Madness of Mr Crouch)
  22. Harry Potter and the Goblet of Fire (film)
  23. Harry Potter and the Order of the Phoenix, Chapter 12 (Professor Umbridge)
  24. Harry Potter and the Order of the Phoenix, Chapter 15 (The Hogwarts High Inquisitor)
  25. Harry Potter and the Order of the Phoenix, Chapter 30 (Grawp)
  26. Harry Potter and the Half-Blood Prince, Chapter 9 (The Half-Blood Prince)

Third-floor of Hogwarts Castle
Advanced Arithmancy Studies classroom · Class 34 · Class 72 · Classroom 2E · Classroom 3C · Classroom 3C backrooms · Classroom 3D · Classroom 7A · Classroom off of the Charms corridor · Classroom off of the Gunhilda of Gorsemoor Corridor · Ghoul Studies classroom
Charms corridor · Third-floor corridor · Gunhilda of Gorsemoor Corridor · Serpentine Corridor
Halls and rooms
Armoury · Clock Tower Entrance · Hesperius Hall · Storeroom · Trophy Room · Vastus Vestibule
Other locations
Trophy Secret Passage · Turret Stairwell
Portraits, statues and other artwork
Damara Dodderidge · Drunk Monks · Google Flange · Basil Fronsac · Gunhilda of Gorsemoor · Merwyn the Malicious · Nicholas de Mimsy-Porpington · Valeria Myriadd · Helena Ravenclaw · Brutus Scrimgeour · Temeritus Shanks · Shepherdess · Witch in green · Witch in Pompadour hairstyle · Wizard in black · Wizard in red
Staircase to the courtyard corridor · Staircase to the first-floor corridor · Staircase to the second-floor arcade

Defence Against the Dark Arts (D.A.D.A.)
D.A.D.A. at Hogwarts
Classroom 3C · Classroom 3C backrooms · Temporary Classroom · Hogwarts Turris Magnus · Teacher's Office · Storeroom · Staircase · Storage room · Lesson Cup · Race Cup · Duelling Club · Dumbledore's Army
Arsenius Jigger · Albus Dumbledore · Galatea Merrythought · Patricia Rakepick · Quirinus Quirrell · Gilderoy Lockhart · Remus Lupin · Bartemius Crouch Junior (as Alastor Moody) · Dolores Umbridge · Severus Snape · Amycus Carrow (as Dark Arts teacher)
The Dark Forces: A Guide to Self-Protection · Break with a Banshee · Gadding with Ghouls · Holidays with Hags · Travels with Trolls · Voyages with Vampires · Wanderings with Werewolves · Year with the Yeti · The Essential Defence Against the Dark Arts · Defensive Magical Theory · Dark Arts Defence – Basics for Beginners · Confronting the Faceless
Spells studied at Hogwarts under D.A.D.A.
Aqua Eructo · Boggart-Banishing Spell · Cave inimicum · Counter-curses · Counter-jinxes · Cruciatus Curse · Curse of the Bogies · Cursed barrier spell · Densaugeo · Deprimo · Disarming Charm · Ear-Shrivelling Curse · Everte Statum · Freezing Spell · Full Body-Bind Curse · Fumos Duo · Green Sparks · Hex-Breaker· Hex-deflection · Hex Zapper · Homorphus Charm · Human-presence-revealing Spell · Impediment Jinx · Imperius Curse · Imperturbable Charm · Killing Curse · Knockback Jinx · Lacarnum Inflamari · Langlock · Limbo Mist anticharm · Nonverbal spells · Patronus Charm · Red Sparks · Reductor Curse · Salvio hexia · Sea Urchin Jinx · Seize and Pull Charm · Shield Charm · Smokescreen Spell · Snake-Vanishing Spell · Softening Charm · Stretching Jinx · Tickling Charm · Tongue-Tying Curse · Trip Jinx · Twitchy-Ears Hex · Verdimillious Charm · Verdimillious Duo Spell · Verdimillious Tria · Vermillious Duo · Vermillious Tria · Wand-Lighting Charm
Creatures studied at Hogwarts under D.A.D.A.
Banshee · Boggart · Cornish Pixie · Dementor · Erkling · Flesh-Eating Slug · Ghost · Ghoul · Grindylow · Gytrash · Hag · Hinkypunk · Iguana · Imp · Inferius · Kappa · Nocturnal beasts · Red Cap · Snake · Troll · Vampire · Vampire bat · Werewolf · Yeti · Zombie
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