Michael Schoch, Answers questions on Noodle
Peachtree City, GA and its schools are all in the Fayette County Public School System.
It looks like River Valley Estates is located in Norcross, GA which would put in the Gwinnet County district. However, I recommend calling the district office at (678) 301-6000 to learn if your neighborhood is within its attendance boundaries.
Best of luck!