Since I work in Learning Support, I find that Superspeed reading can be very differentiated and adaptable. I "test" my students at the beginning of the year. Some need to start at the very beginning, while others start with 1,100. Electronic superspeed reading is great also with the whole group. When lower students are in the group, we practice using 100 so that they have great role models to help them along. When the group consist of mainly "higher" individuals, we go through 1000. It doesn't hurt the lower functioning to follow along if they are present. You never know when they might catch on to something! These are awesome tools.