Wow, 4 groups must be exhausting! I only have 3, and it's nice because once I make up a word list for my high group, I can just re-use it for my middle and low groups eventually. This is my first year, so before I got the hang of it I was making almost 6 lists a week (20 words each!) because I have a total of 6 small groups between my 2 classes. Now I feel like my lists are more manageable.