I am a high school teacher and from my experience at the school I have been teaching at for 18 years, there aren't usually a ton of specific requests by teachers. By high school, we generally feel that students have figured out what works for them. My students need to take notes in class but if they prefer to use loose leaf paper and a binder, or if they prefer a one subject notebook, that is fine. If they like all their class notes in one 6 subject notebook that is fine too. Some students like a different folder for each class, some prefer an accordion style folder, and others want to 3 hold punch everything and put it in a binder and all of those strategies work. Occasionally, one of my colleagues is into portfolio type assessments so 3 ring binders and page protectors... are required. Calculators for math and upper lever science classes are also required. Other than that, they will need TONS of pens, pencils, and erasers. Other things like glue, glue sticks, rulers, scissors, sharpies, poster board, markers, colored pencils... will help with projects throughout the year and are good to have on hand at home at all times. Index cards are good for helping students study vocabulary terms. Post it notes are also a nice thing to have for studying and organizing. The most successful students in high school are generally the most organized students, so have discussions with your children as to what they think will help them stay organized and what will work for them.