Keep it simple.
* An unlaminated chart (easier to fold, no need to use a special marker or cleaning method. If necessary you can write on it with anything.)
* A Jepp CR whiz wheel. Simple to use and the 3 3/4" or 4 1/4" versions are conveniently pocketable. I use the 3 3/4" CR5 size.
* A flight plan/PLOG form. Your school probably has something prepared.
* An A5 or A4 clipboard. A cheap vinyl clip folder turned inside out works fine.
* A 2B pencil ie soft, but not too soft, + some spares for writing on all of the above
* A rubber/eraser for the obvious on all of the above. NB a bit of saliva on your finger works fine on the whiz wheel.
* A scale ruler
* A square protractor
* The watch you already own.
* A small backback with various pockets. Pockets makes it easier to have particular storage spots for things. Makes it easier to find them when you need them.