If your classroom is like mine it is probably short on drawer space.  I sometimes feel like Goldilocks when it comes to my classroom and its drawers.  I used to be in another room that had 3 drawers  1 small, 1 medium and 1 large.  I loved how deep they were, but really they were too deep.  Two years ago I moved rooms and thought WOW instead of 3 drawers I have 5.  The first were to deep and these are too shallow.  I was forever getting things caught when trying to open or close.  A few weeks ago I had had it and decided it was time to reorganize and contain the chaos with containers.  I have an obsession with plastic containers.  I'll post about that at some later date.
I'm only showing you a small amount of what I really have.  Many are in my drawers.
I began by taking everything out of the drawers and sorting it into my plastic baskets..  I had multiples of the same item in several drawers.
As I sorted it became clear to me that I did not need the 20 something boxes of #2 pencils. 
 I teach kindergarten and we use the big pencils.  I also didn't need the overhead projector bulbs I had been hoarding- 
I now have an Elmo.  Quickly the baskets were filling up with like items.  I also had a larger basket for items I no longer needed like the projector bulbs.  Once everything was sorted into the baskets, I started arranging them in the drawers.  The items I would need most often like glue sticks were placed near the front of the drawers  I made it so the baskets didn't have much room to shift about.  I think once I'm happy with this I will use velcro to hold them in place.
I had some leftover items from the drawers that I was able to place in the cupboard above.  It has been three weeks and so far so good.
Now it is your turn. 
- Look around for classroom for those unused plastic baskets.
 
- Pick one set of drawers to reorganize.
 
- Make a box for things to put back in the supply room and another box for things to give away
 
- Pull the trash can over
 
- Pull everything out and start sorting.
 
- Once it is all sorted go through it and ask yourself, "do I really need 12 boxes of staples or 5 boxes of binder rings"
 
- Don't forget to check the ink in those pens- no use keeping them if they don't work.
 
- Now put the basket in the drawers and arrange them.  You may need to do it a few times to make everything just so.
 
- Get rid of the stuff from steps 3.
 
- Post a picture to show us your hard work.