澳大利亚昆士兰州一所学校的校长近日在写给家长的一封信中表示，该校13岁以下学生必须尽快删除Facebook帐号，如若不然，该学生将会被开除。

An Australian school head teacher has warned parents she will expel students under 13 who do not delete their Facebook accounts.

The threat, an attempt to curb¹ widespread cyber bullying², was issued in a letter to parents by Leonie Hultgren, the principal of Harlaxton State School in Queensland.

"There has been some considerable Facebook traffic that either bullies³ a child of this school or in some cases denigrates⁴（诋毁，玷污） some staff and the school," she wrote. "Either of these circumstances warrant the school becoming involved."

Ms Hultgren included instructions to parents on how to report their children as an underage user or disable the account. Under Facebook guidelines, users must be at least 13 to set up an account.

"We have spent the last five years teaching our students about respect, relationships and resilience（恢复力，弹力） ," she wrote. "It may seem insignificant⁵ to lie about your age to gain access to a social media site but where does it stop? ... Parents, you are your child's first teachers. What do you want them to learn?"

Ms Hultgren said children frequently lied about their age to set up a Facebook account but any students who did so would be expelled if discovered.

"Parents should understand that a student who contravenes⁶（抵触，违反） the law or rule in a digital scenario⁷ may need to meet with the Principal to discuss this issue and their continued enrolment at Harlaxton," she wrote.

The state's education officials supported the move, saying school principals should discipline students if they used technology inappropriately, whether during school or outside of school hours.

However, lawyers questioned whether schools had the authority to issue a blanket ban on social media.

"'You won't come to our school if you have a Facebook page seems to me to be extending beyond the realms of the school's ability to dictate⁸ what students can and can't do at home," Steven Troeth, a partner at Gadens Lawyers, told Fairfax media.

"But it's understandable that they might want to have some control over it because of the potential to impact on the school."