spoiled rich girl and is often at the other end of Sabrina's spells as she learns to use them, leading Libby to often call Sabrina a "Freak" or "Freakster". Libby, a cheerleader, is seen to fancy Sabrina's love interest, Harvey, and makes many attempts to ask him out. Libby was sent to boarding school following the end of season 3. Michelle Beaudoin as Jenny Kelley (season 1), Sabrina's best friend during high school in the first season. Jenny befriended Sabrina on her first day, and also introduced Sabrina to Harvey. Jenny walked into the closet at the Spellman house and ended up in the Other Realm, where Sabrina and her aunts had to rescue her and make it out as a dream. Jenny is absent from the second season onwards without explanation, and is never mentioned again. Paul Feig as Mr. Eugene Pool (season 1), Sabrina's favorite teacher who teaches Biology during the first season. He was sometimes bitter and sarcastic, but always interesting and usually lively. Mr. Pool is not mentioned after season 1. Lindsay Sloane as Valerie Birkhead (seasons 2–3), Sabrina's best friend from the second season. She comes across as dim but it becomes apparent that she suffers from self-doubt when Sabrina casts a spell on her that backfired—making her overconfident and careless. She discovers that Sabrina is a witch after Sabrina tells her and Harvey on Friday the 13th. Valerie left to move to Alaska with her parents at the start of season 4. Martin Mull as Willard Kraft (seasons 2–4), the vice principal, and later principal, of Westbridge High, Sabrina's high school, and the on/off boyfriend of both Hilda and Zelda. Hilda mentions that herself and Zelda have stopped using magic on Willard, as it is starting to affect his mental state. This is also mentioned at the Jerry Springer Show when Zelda and Willard's ex-wife Lucy (who is a witch, unbeknownst to him) fight for his affections, in an adaption to the lie detector test, they performed the potion detector test showing he had extremely high amounts of magic in his system. The character left the series after season 4. Alimi Ballard as Quizmaster (season 2), also known as Albert, is Sabrina's tutor who helps teach her to use her magic properly to acquire her witch's license. As Sabrina gained her license in the first episode of season 3, the character's last appearance was