If you want to do that in a script, you can do so with the following information:
Attitudes
0 Hate
1 Dislike
2 Ignore
3 Like
4 Love
Factions
0 Prefects
1 Nerd
2 Jock
3 Drop Out
4 Greaser
5 Prep
6 Student
7 Police
8 Teacher
9 Adult Civilian
10 Shop Keeper
11 Bully
12 PunchBag
13 Player
14 Player2
PedSetTypeToTypeAttitude(Faction, Faction, Attitude) | Set the 1st faction's attitude towards the 2nd faction
Here's some definitions of the words you don't get:
Adore - To really like, to respect fully
Dig - To like
Dispassionate - Neutral, don't really care
Averse - To dislike
Abhor - To hate, will attack on sight