Okay, I am a huge fan of Naruto, and have seen every episode, in Japanese and English, in Japan it's up to a part 2 after a time skip of 3 years and everyone is 3 years older, nonetheless, the review:
As the show is aired on Cartoon Network I'd give it 10+, but the fact is it is extremely edited from the original Japanese version, the Japanese version used words such as "sh*t" "D**n" "b***ard" an awful lot, and the violence was much bloodier, that is why there are Naruto Uncut box sets, which many collector's and kids probably want, be careful, the English version of these is fine, with cursing such as "crap" or "D**n", but the violence raises it to Viz's T+ rating (16+), and part 2 of naruto is being released in a year, and that is after the time skip, which is much bloodier, sexual, and using more cursing then many shows on adult swim, Part 2 is planned to be aired on adult swim as TV-14 for a reason, it's scary as well, as the akatsuki members consist of a Grim Reaper, a man made of dead bodies sewn together, a man who turned himself into a living puppet along with thousands of others by removing their organs, etc. Be careful
But it is a great anime, great plot, America did some terrible dubs, I recommend the Japanese version for the more mature kids, I've seen the uncut in Japanese and every episode, and I believe it's a terrific anime, thumbs up