School Hard - S2-E3
Continuity mistake: While studying at the Bronze, Buffy and Willow leave their books on the table to go and dance. Spike calls them outside to fight a vampire, and when Xander runs back inside to grab a stake the books have all been put back into Buffy's bag. (00:14:00 - 00:15:45)
School Hard - S2-E3
Continuity mistake: When Spike appears at the Bronze and lures Buffy outside, she runs past her table which has her jacket on it. But once she is outside she suddenly has her jacket on.
School Hard - S2-E3
Continuity mistake: When the Anointed One is killed by Spike, he disintegrates into dust. But in the overhead shot, there is no dust on the floor, even though it should have fallen through the bottom bars of the cage.
School Hard - S2-E3
Continuity mistake: In this episode, when Giles is looking for information about Spike, he finds that Spike is barely 200. But, in season four episode seven we find out that Spike is actually 126. Which would make him 124 in "School Hard."
School Hard - S2-E3
Continuity mistake: When Buffy's fighting Spike at the end of the episode, there are times when it's obvious that it's James Marsters' stunt double. Spike's hair is platinum blonde, slicked back, and all one length in the back, while the stunt double's hair is more brassy, spiked in the front, and layered in the back.
School Hard - S2-E3
Continuity mistake: When Cordelia comes up to Buffy talking about how "even slaves get minimum wage", in pretty much every shot her arms switch from being at her sides to crossed in front of her, held behind her or on her hips.
School Hard - S2-E3
Continuity mistake: When Buffy and Willow are studying at the Bronze, the position of Buffy's pencil changes between shots after they leave their table to go dance. Nobody else goes to their table between these shots.
Chosen answer: From what we see in the series, certain girls are identifiable as potential Slayers - Kendra clearly fell into this category. The identification method is presumably mystical in nature, but the Watchers' Council are pretty effective at that sort of thing, so they're quite good at tracking down the potentials ahead of time. Not perfect, though - it does appear that Buffy herself may have slipped through the net - certainly she had no inkling of what she was until she'd already taken on the role of Slayer. It is possible, however, that this was actually cultural - an American family would hardly be likely to turn over their daughter to some strange man for 'training', so the Watchers might have chosen to keep an eye on her covertly, whereas some other cultures (like Kendra's Jamaican parents) might be more willing to believe.
Tailkinker ★