How hard is Air Assault School?

Not hard just pay attention during the slingload classes and you will be good. Unless you can't footmarch, or run, or do push ups/pull ups.

The best advice I can give you is don't concern yourself with how hard it is. Go in with a positive attitude, be motivated, and give 100% effort and you will be fine. Same applies to anything in life. Anything earned has its challenges, otherwise it would be given and not earned.

It's hard if you don't study. They'll give you a small handbook with everything that you need to know. Just take some time and study that material and you'll do fine on the written exams. Add for the hands on, pay attention to the instructors. They do a good job of explaining everything. The toughest part for me was the obstacle course and the repel tower.

Just listen to what they tell you and you will be fine. The times changes daily so you may have to be in at 0530 one day and 0415 the next.

Attention to detail
Attention to detail
Attention to detail