Plot hole: After Nanahara and Noriko run away from Akamatsu at the school, Niida shows up from behind some bushes opposite the school and inadvertently kills Akamatsu with his crossbow. But Niida is Boy 16, which means he should still be in the school building (he's supposed to come out after Noriko, who's Girl 15). There's no way he has any time to get into those bushes.
Battle Royale (2000)
1 plot hole - chronological order
Directed by: Kinji Fukasaku
Starring: Tatsuya Fujiwara, Takeshi Kitano, Aki Maeda, Taro Yamamoto
Revealing mistake: Many times throughout the movie, people are shot and they bleed, but their clothes don't have holes from where the bullets hit them. The most noticeable examples are when the teacher is shot at the end, and when the big gun fight between the girls breaks out in the lighthouse.
Teacher Kitano: Life is a game. So fight for survival and see if you're worth it.
More trivia for Battle Royale
Question: I have heard the following story about this film: one of the assistant producers met with Quentin Tarantino. Quentin talked about how much he liked the film, and the producer asked him which bit he liked best. He replied that he liked the lighthouse scene the best, and the assistant producer laughed out loud, and said that the main producer would be amused to hear him say that - because he pinched the scene from Reservoir Dogs. Is this really true?
Chosen answer: Specific aspects of direction may be from Reservoir Dogs, but the scene itself plays out almost exactly the same as in the book.