Khan Academy touts itself as a site where "anyone" can get a world-class education for free.  I decided to finally give it a try and directed my son to watch videos on History after watching a couple of minutes of one of the videos.  After watching the first video, he told me he didn't watch to watch them anymore because they were inappropriate.  Keep in mind, that these videos had the "Standard" rating on YouTube, but there was no indication on Khan Academy that they were for a particular age group or inappropriate for children.  After going back and watching the video, I saw there was a cartoon sequence suggesting people having sex in a bed.  The narrator, and video host, referred to it as "skoodilypooping."  And then another sequence shortly there after with Barbie figures making a "skoodilypooping tape."

Wow.  I was shocked.  I stopped watching.  This mom just exposed her 11-year-old to inappropriate media.  But how was I to know?  I can't watch every single video on Khan Academy's website.  There are no parental controls, suggested ratings, etc.  There is nothing that restricts a child from being exposed to inappropriate media.  I talked with some of my friends who were equally unaware of the potential to expose their children to inappropriate content.

I wrote to customer service and this was the response:

"As you know, Khan Academy is for all age groups, even adults. The different sections are tailored towards different age groups. The Crash Course History lessons are meant for older students than your son.
Here is an article about how KA advices parents to handle the "appropriate or not" issue.

"Age inappropriate or not is a combination of the maturity of the child and the culture that child is raised in. We do not have material here with adult rating, but some sections do contain material intended for middle school, highschool and above, and they may contain references to sexual activity. This can be excluded by a web filter that handles both white listing and black listing, if you follow the advice in the article and watch the videos in advance. Most likely you would want to exclude part of the medical, biological and historical videos, and some of the Crash course videos in Chemistry. The math and music section should be safe, and there are other subject that are geared to younger students like
https://www.khanacademy.org/ science/discoveries-projects

"I hope you will find areas that your son enjoys more."

Surely Khan Academy reviews the content on their site before publishing it. I like the idea behind Khan Academy, but I want Khan Academy to develop parental controls, filters, or ratings systems that help parents protect children who, right now, have free rein of the site.