When should a student get a Facebook account? Schools always discourage it, parents usually frown on kids communicating through it, and Facebook does not allow kids under 13 to have an account. Yet one study found that 40% of Facebook users under the age of 18 were actually under the age of 13, and another study suggests that 34% of 9-12 year olds have Facebook accounts.
The same 1998 US law which limits email accounts to kids 13 and over, the Children's Online Privacy Protection Act of 1998 (COPPA), also governs social networking sites like Facebook, Twitter, and Instagram. Recently, the FTC actually strengthened the law with 169 pages of additional privacy restrictions. So kids under 13 aren't going to be openly welcome on social networking sites for the foreseeable future.
But kids are using Facebook in a big way, as the studies mentioned above attest. All social media sites let new users set up accounts if they provide a birth date prior to the year 2000, and absolutely no verification takes place if the new user fudges the date a bit. In 2012, Facebook was rumored to be developing a special version of Facebook for kids under 13 with substantial parental controls, but those efforts appear now to be abandoned. Facebook implied in news reports that it was simply too complicated to come up with a suitable system with the right restrictions.
Several big problems have surfaced with kids using Facebook, with the most common being cyberbullying. Kids themselves believe that about a third of bullying is now done online these days. And besides the standard types of bullying, using an impersonal, public social media platform like Facebook allows kids to be brutally honest and say things they might never otherwise say in person.
Schools around the country have encountered vicious and lewd comments on student Facebook pages in addition to inappropriate photo contests, school critique pages, teacher gossip pages, and yes, brutally honest beauty pageants. West Salem High School in Wisconsin this year became aware of a "confessions" page where students were posting details of lurid sexual encounters and drug and alcohol abuse. While the original posts were anonymous, as soon as someone "liked" a post, their name became visible to school administrators, demonstrating once again the unintended consequences of using social media.
Besides the things kids post on Facebook the other major problem is the amount of time spent using Facebook. 43% of kids in grades 9-12 now say social networking sites like Facebook are their "primary mode of communicating with friends", according to one report. Kids consume huge amounts of evening and weekend time using Facebook. One Ashland Middle School student commented that "using Facebook" was his high school sister's primary hobby outside of school. And kids are using Facebook at school too. At schools which ban mobile devices, 63% of students report using them anyway.

Social media also allows posts to go viral, with vast numbers of users reading comments just minutes after they are posted. Earlier this year, the Watertown City School District in New York discovered just how viral Facebook posts can be when someone posted a Facebook comment saying that a student was bringing a gun to school. Once again, the largely anonymous, impersonal nature of social media allows people to say things they would never even dream of saying in public. As most Facebook users have witnessed, even parents often are guilty of "too much information" on Facebook.
The problem of underage Facebook use has become so rampant that Facebook itself estimates it's removing 20,000 underage user accounts every day, using a variety of heuristics, direct observation, and reporting to do so. Facebook even has a special site set up where people can report suspected under age Facebook users. The UK government published a detailed document in 2011 called "Common Facebook Issues for Schools" which you can find
at this link.
Because educators and parents find so many problems related to Facebook usage by kids, please think twice before allowing your child to set up a Facebook account, and avoid it if at all possible. If you decide to give your child a Facebook account, at least insist that they "friend" you so that you can monitor their posts and help guide their understanding of "netiquette."
Sources:
WebProNews
Huffington Post
Linn County Sheriff's Office
LaCross Tribune, La Crosse, WI
WWNY News, Watertown, NY
Facebook.com