Hi Sarah-
first of all-I am excited that Iowa has joined the ACEs connection forum! I've been utilizing this site on my own for awhile now and am glad that my colleagues in eastern Iowa now have a way to link to the rest of the state, and the nation, to learn from each other and mobilize our resources.
to respond to your question about who to target in outreach efforts, my thinking continues to be targeted on educating public schools, preferably pre-K through 12, but if that's too much than pre-K and elementary. The potential for impact seems greatest there, given the amount of time kids are there, and how much influence educators really can have in terms of detection, referral, and building protective factors for children through both classroom and individual relationships.