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