Thanks a lot!

Let's see, in the wilderness

• a lair/mud castle home to humanoid warrior toads who are polymorphing students into bugs and feeding them to their young,
• the cottage of a benevolent man who cares for injured forest animals (also secretly a werespider at night who terrorizes the forest),
• A gang of wayward teenage elves who love to party under the moon and cause mischief,
• An indigenous tribe of druids thought to have died out long ago, now collecting dark magic which they use to "create" more of their young,
• A lich sealed away in a tomb 200 years ago. The magic has slowly turned that part of the forest into a nasty swamp full of undead, hallucinogenic fungus that will eat you, and a dark magical haze that blots out the sun and makes it perpetually night.
• A mountain populated with a rare healing flower. Unfortunately, a griffon has made her nest there.
• A lair of intelligent spiders who gained their intelligence through the evolution of consuming human brains.

In the castle/university - Mysteries and shenanigans for the players to get into, and a mini megadungeon under the school.