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