Well Misto my sons must be like your daughter - every couple of years their backpack would fall apart and they would need a new one. Other than that? Pens, pads/notebook paper, glue stick and folders were needed. Here and there someone needed colored pencils or crayons but that about covered it. All of $15 a piece.
I don't consider clothing to be a school supply so am also not counting costs for uniforms/school clothes.
I don't consider clothing to be a school supply so am also not counting costs for uniforms/school clothes.