My own personal view with kids is to let them see and experience the world and guide them along the way. The 'cat would be a great site to check out!!
However, being an employee of a school division, I am well aware of the many books-of-rule that have to be adhered to provincially, divisionally and at the school level. It would be beneficial to check that out.
We have a firewall that is meant to keep the bad stuff out, but that's not always effective.
One of our schools has (voted by the parents of the students) a zero-tolerance policy on profanity. This site would not be appropriate for that school.
Hope this helps!! Sheye