I have an address of a next of kin for a WWII sailor

1930 this family was still in the Navy but Merritt Graham left service and re-enlisted in 1942 from KY.

Graham's at 603 E. 13th St. Hopkinsville.....what school would children have attened from this address in 1940-41-42.

What kind of records are available for that time frame. I'm looking for some enlistment papers for a Merritt Dayton Graham......any help with 1940's Christian Co. would be helpful.