According to Google's <em><a href="https://www.google.com/accounts/TOS?loc=US&amp;hl=en" target="_blank">Terms of Service </a></em><a href="https://www.google.com/accounts/TOS?loc=US&amp;hl=en" target="_blank">Agreement</a><em>...</em>
<blockquote><span>2.3 You may not use the Services and may not accept the Terms if (a) you are not of legal age to form a binding contract with Google, or (b) you are a person barred from receiving the Services under the laws of the United States or other countries including the country in which you are resident or from which you use the Services.</span></blockquote>
<span>Now if we could just figure out what that means in terms of how old you need to be to have a Google account.
</span>

Also contributing to the discussion, COPPA...

<a href="http://www.ftc.gov/ogc/coppa1.htm" target="_blank">Children's Online Privacy Protection Act of 1998</a>

and if anyone can figure out what it means to teachers and students, I would like to know.