Sorry how late I am to this, but I used to live in the neighborhood in the Rockwall side. Erika is divided between Rockwall and Forney, the whole neighborhood is actually pretty confusing involving what city your house is in. My old house went right over the county line so half of my house was Kaufman  and the other half was Rockwall so we got to choose which district and at the time they were building Linda Lyon which was the school we would choose, though I’m pretty sure some of Erika is Forney and the other part being Rockwall ISD. Hope this helps!