Here is the full list of all 24 Monster High: New Ghoul in School achievements.
All other Achievements Complete.
Obtain All Clothing Items.
Save the School!
Upgrade the Casketball Court.
Complete Fashion Club Events.
Complete Standalone Events.
Complete Cooking Club Events.
Upgrade the Creepateria.
Complete Comic Book Club Events.
Complete Robotics Club Events.
Complete a Fundraising Event.
Complete Environmental Club Events.
Collect all Cheer Steps.
Meet all the characters in Monster High.
Purchase Clothing Online.
Have over 1000 Spirit Coins.
Leave for school with a Tidy Room.
Complete first Fearleading Event.
Collect all Dusty Pennants.
Collect all Spirit Spiders.
Ring the Bell in the Bell Tower.
Find all the Shortcuts.
Complete first Council Event.
Find and use a Locker Code.