Here's the Student Model Radio King snare I posted in the "student model Radio Kings" thread, but now since polished up.
There's an engraving in the reso rim, "EUSD OK 185." I bought it in San Diego, and Oak Knoll Elementary School is part of Encinitas Unified School District, which seems to explain part of its history.
I don't remember any drum sets in elementary school, though, just cowbells, sandblocks, bells, and in the later grades, autoharps.
It's in great shape for a drum of its age, much less one that spent time being played by elementary schoolers.