Hi there, I'm probably just being dumb but I can't find the missing student from the flight school, or how to enter the underwater section.

I found a room in the middle bottom that seems to have something to grab, but there is a solid wall of earth and dirt I can't get through despite pressing the button there (no idea what the button opened up... I'm in the public build

Any help would be awesome!

No problem! ^^

For missing student, leave the village and look around the in immediate area. Underwater area is under the temple - Go to the main hall and drop down on the left side. Follow the way all the way to the right.

Cheers!