All three ratings are on a scale of 1 to 10, with 10 being the best. Less than 1 percent of parks or campgrounds receive a rating of 10. Campgrounds with a 10/10*/10 rating have more facilities, are better maintained and are more visually appealing than 5/5/5 - rated campgrounds. Campgrounds are inspected annually by dedicated RVers like you. Unannounced, random Quality Checks are also made throughout the year
How to Read Trailer Life Directory Ratings (From Trailer Life)