Here is the full list of all 110 School of Dragons achievements.
Catch 100 eel.
Catch 100 salmon.
Play single player Thunder Run Racing 30 times.
Play Fireball Frenzy 15 times.
Shear black sheep 100 times.
Shear sheep 100 times.
Harvest 300 pumpkins.
Shear black sheep 50 times.
Collect 300 chicken eggs.
Shear sheep 50 times.
Play single player Thunder Run Racing 20 times.
Catch 250 fish.
Catch 50 salmon.
Harvest 150 pumpkins.
Collect 150 chicken eggs.
Feed your dragon 100 fish.
Harvest corn 150 times.
Shear black sheep 25 times.
Collect 60 sheep.
Play single player Thunder Run Racing 10 times.
Collect 30 sheep.
Collect 15 sheep.
Get 25 A+'s in Flight Club.
Catch 25 salmon.
Shear sheep 25 times.
Collect 75 chicken eggs.
Get 20 A+'s in Flight Club.
Feed your dragon 75 fish.
Play with your dragon 75 times.
Play with your dragon 50 times.
Harvest 90 pumpkins.
Catch 50 eel.
Shear black sheep 10 times.
Harvest corn 75 times.
Catch 150 fish.
Harvest corn 45 times.
Harvest 100 dragon nip.
Feed your dragon 50 fish.
Harvest 30 pumpkins.
Collect 5 sheep.
Shear sheep 10 times.
Play with your dragon 25 times.
Play Fireball Frenzy 5 times.
Catch 100 fish.
Collect 15 chicken eggs.
Catch 10 salmon.
Catch 25 eel.
Feed your dragon 25 fish.
Play single player Thunder Run Racing for the first time.
Get 10 A+'s in Flight Club.
Play with your dragon 10 times.
Harvest corn 15 times.
Harvest 50 dragon nip.
Catch 50 fish.
Harvest 30 dragon nip.
Harvest 10 dragon nip.
Catch 10 eel.
Play Fireball Frenzy for the first time.
Catch a fish for the first time.
Complete 25 different Flight Club lessons.
Complete 20 different Flight Club lessons.
Complete 15 different Flight Club lessons.
Get 5 A+'s in Flight Club.
Complete 10 different Flight Club lessons.
Get an A+ in Flight Club.
Complete a Flight Club lesson for the first time.
Fly with Toothless.
Make 1 friend.
Make 5 friends.
Make 10 friends.
Create your own Clan.
Join a Clan.
Visit a friend for the first time.
Visit 10 different friends.
Visit 15 different friends.
Visit 25 different friends.
Visit 40 different friends.
Visit 10 different farms.
Visit 15 different farms.
Visit 25 different farms.
Visit 40 different farms.
Play Fireball Frenzy 25 times.
Play Fireball Frenzy 40 times.
Get an A+ on 3 Meatlug lessons.
Get an A+ on 3 Groundsplitter lessons.
Get an A+ on 5 Night Fury lessons.
Play single player Thunder Run Racing 50 times.
Get First Place in a Thunder Run race 5 times.
Get First Place in a Thunder Run race 10 times.
Get First Place in a Thunder Run race 20 times.
Get First Place in a Thunder Run race 30 times.
Buy 5 decorations for your farm.
Buy 15 decorations for your farm.
Buy 30 decorations for your farm.
Buy 50 decorations for your farm.
Win your first challenge.
Visit 10 different Vikings' About Me pages.
Visit 20 different Vikings' About Me pages.
Visit 30 different Vikings' About Me pages.
Visit 50 different Vikings' About Me pages.
Win 5 challenges.
Win 10 challenges.
Win 25 challenges.
Win 50 challenges.
Make 20 friends.
Make 50 friends.
Visit 50 different friends.
Visit 75 different friends.
Visit 100 different friends.
Visit 150 different friends.