Robin Tunney wore an auburn wig throughout filming because she shaved her head for her role in "Empire Records (1995)," which wrapped up a month before production started on this film.
Andrew Fleming states in the DVD commentary that an MPAA PG-13 rating was sought. They followed all of the guidelines to earn that rating, but in the final outcome the film was rated R because the film dealt with teenage girls using witchcraft.
While researching The Craft, Fairuza Balk became familiar with Panpipes Magickal Marketplace in Hollywood, eventually buying the store and continuing to operate it until 2001 when she sold it to Jymie Darling and Vicky Adams, whom she had brought in as managers after her own purchase in 1995.
An official website of the film said: "The crew had to return to the location a second time to complete filming interrupted by several weird occurrences that even caused witch consultant Pat Devin to raise an eyebrow. As the fog rolled in at midnight, the four actresses used actual Wiccan rites and language to invoke powerful forces. Then, as Fairuza Balk's character Nancy attempts to invoke the deity Manon, a flock of bats hovered over the set and the tide rose dramatically, extinguishing the circle of candles. Witchcraft consultant Devin recalls that "Manon, a fictitious creation for the film, sounds very close to Mananan, the Gaelic god of the sea. Luckily, we weren't all swept to sea!'" Director Andrew Fleming is quoted: "'Every time the girls started the ceremony, and only when they would start the ceremony, the waves would start coming up tremendously fast, pounding heavily. Then, right when Nancy says her line, "Manon, fill me," right at that exact moment, we lost power. It was a very strange thing.'"
Rachel True didn't find out that Rochelle's subplot had been changed until after she was cast. She was initially unsure about the racially charged bullying, but years later stated she felt it was important that the film included it.