"1/8
"Appropriate for all ages"
Stories with this maturity level will not, by design, have any potentially objectionable content. An example of a type story with this rating would be a quiz on mathematics."
"2/8
"Choking hazard for children under 4"
Contains content that may not be suitable for persons under age 6. To compare to the movie rating system, this would be G."
"3/8
"Must be at least this tall to play"
Contains content that may not be suitable for persons under age 10. If this were a movie, it would probably be between G and PG."
"4/8
"Need to be accompanied by an adult"
Contains content that may not be suitable for persons under age 13. If this were a movie, it would probably be PG."
"5/8
"Aren't you a little too old to be trick or treating"
Some material may be inappropriate for persons under age 13. If this were a movie, it would probably be PG-13."
"6/8
"I'll need to see some identification"
Some material may be inappropriate for persons under age 16. If this were a movie, it would probably be between PG-13 and R."
"7/8
"Anything goes"
Some material may be inappropriate for persons under age 18. If this were a movie, it would probably be R."
8/8 is simply non-existent