The title and some plot elements of School Hard are taken from the Bruce Willis action movie Die Hard.

Joyce saves her daughter in School Hard by hitting Spike over the head with a fire axe. She reminds him of this in a hilarious scene when she meets him again in Becoming (Part 2).

The scene in School Hard where Buffy talks to Joyce through a hole in the wall was propably the influence for the scene in Restless where Buffy discovers her mother has decided to live in a wall.

We first discover that Principal Snyder knows that something odd is going on in Sunnydale in School Hard. When talking to the police after escaping the school, he scoffs at telling the truth, deciding to go with the old “gangs on PCP” story instead.

Giles says Spike is “barely two hundred”, according to his books, in School Hard. His books must be a little out, because later episodes (such as The Initiative) make it clear that Spike is actually around 120 at this time.

Ms. Calendar tells Giles “Call me Jenny, Miss Calendar is my father” in Some Assembly Required. I originally put this in the goofs section but ‘The Demon Alfalfa’ pointed out to me that this ‘mistake’ was probably intended by the Buffy writers, as it could be a clever take on …

The point is made in Some Assembly Required about worthless parts due to formaldehyde - did Chris dig up his brother’s body the very next day? Even so, did he learn all of the biology needed to be successful in such a short time or did he always have this …

Eric sings “My Girl” in Some Assembly Required, a song written by Smokey Robinson and Ronald White in 1965. The Temptations did a famous Motown cover of the song.

In Some Assembly Required, Buffy says, “Then if you wouldn’t mind a little Gene and Roger…” She’s referring to Gene Siskel of the Chicago Tribune and Roger Ebert of the Chicago Sun-Times who are two famous film critics in America.

Giles and Jenny continue their unconventional romance by going on a date to a school football game in Some Assembly Required. How very romantic.

The first seeds are sown for Cordelia’s future relationship with Xander when he saves her from the burning science lab in Some Assembly Required. She thanks him but he’s too busy asking Willow why he can’t get a date to listen to her. Cordy is almost part of the gang …

The title of the episode When She Was Bad comes from a nursery rhyme by American poet Henry Wadsworth Longfellow (1807-1882). The poem goes:
There was a little girl who had a little curl
Right in the middle of her forehead
When she was good, she was very, very good
And when she was …

The Three Stooges are mentioned by Xander in When She Was Bad, “I would have gone with Stooges.” The Three Stooges were a slapstick comedy team whose film shorts were made between 1934 and 1959.

The Bible is referenced a few times in the Buffyverse. In the episode Angel, the Master says, “out of the mouths of babes”, which is from Psalms 8:2. Absalom, the religious vampire in When She Was Bad, was named after a character in the Bible. Absalom was the third son …

Willow and Xander play a game between themselves in the teaser of When She Was Bad where they guess a movie from its tagline. The movies mentioned are: The Terminator (1984), Planet Of The Apes (1968), Star Wars (1977) and Witness (1985).