How do I block google site?

[franeckilavern]

Kids at my school are playing games using this  sites. How do I block this site?

https://sites.google.com/site/bestunblockedgames66/

[rotblitz]

Add the domain sites.google.com to your “always block“ list at your dashboard.

[franeckilavern]

But ı dont need block google.com

ı need block unblocked games 66 

[rotblitz]

[grw]

What if there are specific within sites.google.com that need to be let through?  We are having the same issue but there are some legitimate sites especially in the educational space.  Thanks