The new school year is coming up. Not every parent can afford all the supplies their kids need and, sadly, teachers end up footing the bill for a lot of stuff.

RetailMeNot talked to a bunch of teachers and asked which things they need most. If you're doing your back-to-school shopping and want to buy a little extra, here are the top things teachers need donated:

  1. Pens and pencils. Pre-sharpened are the best.
  2. Notebooks and folders. Ideally, without any designs on them.
  3. Erasers. The kind you stick on the end of a pencil after the original eraser gets worn out.
  4. Crayons. A box of 24 is perfect for teachers in kindergarten through the 3rd grade.
  5. Glue sticks.
  6. Dry-erase markers. Teachers go through a lot of them.
  7. Kleenex and antibacterial wipes. Schools don't always buy enough.
  8. Red pens. Teachers go through a ton of them grading papers.