The High Frequency Children's Lists

I cannot for the life of me remember how I organized the high-frequency lists for children. It looks like the following things are true:

1) List 1 includes all the words that are in both the Dale and Chall list and the Michael West General Service List;

2) List 3 includes all the words that are in both the Dale and Chall list and the Academic Word List;

3) The lists are approximately in order of difficulty.

One important question: should I reorganize the words so that early learners in high school can skip books 5-6? Also, how much overlap is there between these lists and the SSAT lists (especially between books 5-6 and the SSAT lists)?