Corrected entry: It the begining of Harry Potter, there is a sequence when Harry's mother is being killed. When we see Harry, he is wearing a Blue's Clues romper suit - I do not recall Blue's Clues being around 12 or so years ago.
Corrected entry: In the sorting ceremony, we see Susan Bones, the girl with long curly hair, was sorted into Hufflepuff House. Later, in Professor Snape's Potion class, we see Susan was sitting behind Harry when Snape questions him. Only Gryffindor and Slytherin are attending in that class together - Susan was in the wrong class!
Correction: It is never said in the movie that only Gryffindor and Slytherin have potions together. There are Ravenclaws in the class too.
Corrected entry: The promotional photos show Harry Potter with a scar on his forehead over his right eye. On the covers of all the books, the scar is clearly shown to be over his left eye. This is to correct the mistake about the scar being in the wrong location on Harry's head.
Correction: JK Rowling has commented on this and said that in the text of the books, the scar's location is never indicated (only that it's on his forehead somewhere) and it was the novel's artist who decided that it should be centered (see the 4th book cover for the best view). The movie people decided to make it off-centre, and Rowling was fine with that.
Corrected entry: When Harry, Ron, and Hermione are telling Hagrid that Snape is trying to steal the stone, he tells them that Snape helped protect the stone, and 'he's not about to steal it'. So far so good, sticks to the book. However when they actually try to save the stone, Snape's challenge, the logic one with potions, is missing!
Correction: There is no evidence in the film that suggests that each of the teachers did a separate challenge.
Corrected entry: When Ron is playing chess on top of the knight, why does he not just get off it when the other side's piece comes to destroy it? I could not understand why he clung on. It took an age for the other piece to arrive to destroy his knight, he had all the time in the world!
Correction: Jumping off would be the same as resigning.
Corrected entry: When Harry comes back to his room after having seen his parents in the mirror, he is still wearing the invisability cloak. However when Harry pulls back Ron's duvet to wake him you cannot see his hand yet he would have had to take his arm out of the cloak to do the action.
Correction: No, he would not have had to removed his hand from underneath the cloak as even through the cloak he can move objects.
Corrected entry: At the battle with the professor, the professor was perfectly fine when he tried to strangle Harry. It's only when he was touched by Harry's hands did he start to melt. But later Dumbledore said that the power was in Harry's skin (But apparently not at the neck).
Correction: The power is in his touch, ie. when Harry uses his hands - it doesn't necessarily apply to any part of his body.
Corrected entry: When the troll is in the girls toilets, it looks like there's only one line of cubicles, and he smashes the top half off twice.
Correction: he only smashed a few of the stalls the first swing, then the rest of them the second time. There is still only one row of stalls.
Corrected entry: Harry Potter has lovely green eyes. When Voldemort is about to kill baby Harry during the flashback, Harry's eyes are blue.
Correction: Almost all Caucasian babies have blue eyes initially - they only change colour as the child gets older.
Corrected entry: When Ron, Hermione, and Harry are looking at James Potter's seeker plaque in the trophy case, a similar crest next to his says that McGonnagall was on the same Gryffindor Quidditch team - the movie leads you to believe she was pretty old. That means, by my reasoning, that she would have been at least 20 years old when she started playing for the Gryffindors in the 1970s.
Correction: This might be a different McGonagall, or a child of Professor McGonagall, for there's no evidence that this is the McGonagall currently teaching at the time.
Corrected entry: In the scene where the troll has just gone into the girls washroom, Hermoine quickly goes back in to the 1st stall on the right hand side, but when you see the above view she is in the 3rd from the right. (01:07:23)
Correction: The overhead shot of her shows that she has her feet in the second cubicle from the left, most of her body in the third cubicle from the left, and her head just in the fourth one. She is crawling from one cubicle to the next. When she emerges, a few shots later, she has crawled up almost to the end of the cubicles.
Corrected entry: At the end of the movie Hagrid gives Harry the photo album. After Harry looks at it and tells Hagrid goodbye, he walks back to the train with his hands at his side and there is no sign of the album in either hand.
Correction: He could just put in one of the pockets of his robes.
Corrected entry: When Harry first finds the mirror of Erised, he walks through the door and the mirror is on his right. This is the same when he takes Ron to see it, but when Dumbledore finds him in front of the mirror, if you look where the door should be, there is just wall.
Correction: It took a close look to resolve this one. The room's laid out such that the door is between the outer wall and a shorter inner wall - Harry has to run around it to get to the mirror. As such, when we see the room it looks like the door's disappeared, whereas actually it's just behind a short wall.
Corrected entry: When Harry first views the golden snitch, and it begins to fly in the air, both characters are apparently watching it, but are looking in different directions.
Corrected entry: When Hagrid show Harry, Hedwig (the owl) If you look at Harry's forehead you can see that his scar isn't there. If you look in the previous scene, when Mr. Olivander tells Harry about his wand, his scar is right above his eyebrow, but in the next scene his scar isn't there.
Correction: If you look close enough, you can tell the scar is still there, and that it just kind of faded out a bit. It is still there, though.
Corrected entry: After Harry, Ron and Hermonie have completed the chess game challenge, Harry instructs the other two to "go back and get help". So, are they just supposed to waltz back through the previous challenges, somehow climb up through that Devil's Snare, and out the trapdoor guarded by Fluffy, who is very awake now (and hopefully not standing on the door)?
Corrected entry: During the Quidditch match, someone falls from their broomstick, landing in a pile of sand. But when we first saw the pitch it was all neat grass - where did the sand come from?
Correction: There's sand visible under the goalposts in the first shot of the field.
Corrected entry: In the scene on the rock in the middle of nowhere, Harry is reading the letter from Hogwarts and Uncle Vernon tells Harry, 'You'll not be going there, Daniel.' (00:15:58)
Corrected entry: In the scene where Harry is talking to Hermione and Ron about Hagrid's dragon, he says "Hagrid's always wanted a dragon, he told me so the first time I ever met him," but in the movie Hagrid never tells this to Harry.
Corrected entry: In the scene of the sea hut, how could the gun have been shot if Hagrid had bent it?
Correction: The gun is a shotgun. Since shot consists of small pellets they could have easily passed through the bend.
Correction: The pajamas baby Harry is wearing are not Blue's Clues. It's a blue bunny on the sleeves.