User blog comment:Herewithoutachange/Rating systems we could use, and their MPAA equivalents/@comment-24438956-20140928024025

K will be kids (any age). Will replace G.

P will be preteens (any age higher than 10). Will replace PG.

T will be teens (any age higher than 13). Will replace PG-13.

A will be adults (any age higher than 18). Will replace R and NC-17.

This rating system will be called the "KPTA" system. If you don't like the name, choose another, because honestly, I stink at picking names.