Educational Value- In every episode, a character (usually Twilight) learns a lesson about friendship or life in general, which is relayed in a letter to Princess Celestia, the goddess and ruler of Equestria. The lessons are great, and even apply to teens and adults.
Positive Message- This show may have its moments where a character isn't perfect, but they learn their mistakes and fix them, no matter what the costs.
Positive Role Model- The show's setting, a quaint little village called "Ponyville", is full of diverse characters. Twilight Sparkle's a librarian and genius. Rarity's a designer who operates Carousel Boutique. Rainbow Dash is athletic, fierce, and loyal. Fluttershy is kind, sweet, and caring, especially to her animal friends. Applejack is honest and strong, and Pinkie Pie's fun, loud, and the life of the party. Each character's personality is different, and that's a good message to send to girls (and boys!).
Violence- This show is a little violent/dark from time to time. It's similar to "Invader Zim" in its level of darkness (ponies falling under fatal spells, Pinkie Pie's mouth being removed, Discord zapping away everypony's powers?! You know, for kids!) and has Powerpuff Girls-esque violence (no blood involved).
Consumerism- Considering this show is owned by Hasbro, of course it would have a little consumerism. (For example, Twilight Sparkle has a hot-air balloon and Equestria's transportation is based on steam-powered, pink trains, also merchandise.) But it's not like there are new elements constantly added to the show just to sell the merchandise. Sure, you could run to the store and buy yourself a Carousel Boutique or Canterlot Castle playset, but if it weren't a Hasbro show, there wouldn't be the need.
All in all, it's a great family show that anyone can sit down and enjoy. I recommend this to both girls and boys for its witty humor and realistic characters. 5/5 stars!