Trevor tries to convince Kyle to go to the police about Coach Perry's abuse in episode 2x09 "Update".
Source: What's Filming
From episode 1x05 "Sweet Kicks".
Lara Jean goes to high school where during track practice she is mortified when realizes that all of her love letters were somehow mailed out.
Lara Jean third-wheels a date between Margo and Josh.
Betty gives Veronica a tour of the school on her first day in episode 1x01 "Chapter One: The River's Edge".
Source: What's Filming — Twitter