What is the highest TV age rating?

What is the highest TV age rating?
TV Ratings

TV-Y: All Children. Intended for children ages 2 to 6 and is not designed or expected to frighten.
TV-Y7: Directed to Older Children.
TV-Y7 FV: Directed to Older Children – Fantasy Violence.
TV-G: General Audience.
TV-PG: Parental Guidance Suggested.
TV-14: Parents Strongly Cautioned.
TV-MA: Mature Audience Only.

TV Ratings
  • TV-Y: All Children. Intended for children ages 2 to 6 and is not designed or expected to frighten.
  • TV-Y7: Directed to Older Children.
  • TV-Y7 FV: Directed to Older Children – Fantasy Violence.
  • TV-G: General Audience.
  • TV-PG: Parental Guidance Suggested.
  • TV-14: Parents Strongly Cautioned.
  • TV-MA: Mature Audience Only.