This high POV of the school was created specifically for this scene.
After Trey writes the script, it's immediately illustrated into "storyboards", like this
Check out this character art of Randy in his white suit.
A series of special poses needed to be created for this scene of Cartman and Token running through the school
Did you notice a new character in the background? His name is Hugh and he donated to an @omaze campaign supporting @NEXTforAUTISM and will live forever as a #SouthPark22 character.