Here is the full list of all 38 Bully: Scholarship Edition achievements worth 1,000 gamerscore.
Complete Chapter 5
Complete 30 Errand Missions
Travel 100 km on the bike.
Complete All Bike Races
Complete Chapter 4
Travel 100,000 meters on foot.
Travel 50,000 meters on the skateboard
Complete All Lawn Mowing Jobs
Pick 50 flowers
Complete Chapter 3
Receive 20 kisses from the gents.
Achieve A High Score on Consumo, Nut Shots, and Monkey Fling Arcade Games
Complete 20 Errand Missions
Beat up 200 opponents
Egg 25 cars.
Buy 100 sodas
Complete Chapter 2
Hit people with stink bombs 50 times.
Give 50 wedgies
Break 300 bottles at the shooting gallery.
Perform 200 wheelies on the bike.
Complete 10 Errand Missions
Complete All Paper Route Missions
Say 100 taunts.
Complete All Go Kart Races
Complete ½ of all Go Kart Races
Complete All 4 of the Carnival Games once
Receive 25 kisses from the ladies.
Complete Chapter 1
Spend 5 hours out after curfew
Trip 25 people with marbles.
Kick 100 soccer balls.
Complete 9 Classes
Complete 6 Classes
Complete 3 Classes
Collect 250 clothing items.
Complete All Missions
100% completion.