Prismacolor Col-Erase Colored Pencils
Let me just get this out there before I say anything else – ignore the “erase” in the title because they really don’t erase (see the middle column of red lines in the second picture.) If you get past that part, they are very easy to sharpen, great to write with, and the colors are vibrant. I could see these being a perfect marking pencil for teachers.
Have you tried them? Tell us about your experience! (You can buy Col-Erase Pencils from our site if you want to try them out!)