Typically not many; Bess, made by a Seattle-based software company called N2H2, reportedly is the most widely used content blocking program in American K-12 schools.
The primary issue is you would need to install another potentially more dangerous program to create a bridge to over-pass the Bess program -- highly not recommended.
There are reports (since 2001) that the software supports, if not enforces, censorship of certain sites; the school admin has complete control over these functions.
Bess Hawes's birth name is Bess Lomax.
Davone Bess's birth name is Davone Atrayo Bess.
Denny Bess's birth name is Dennis Dale Bess.
Kay Bess's birth name is Kay Christine Bess.
Bess Hoffman has written: 'Cookies by Bess' -- subject(s): Cookies
Rufus Bess's birth name is Rufus T. Bess Jr..
Porgy and Bess
Lane Bess.
Bess Streeter Aldrich's birth name is Bess Geneva Streeter.
Big Jeff Bess's birth name is Grover F. Bess.
Ardon Bess was born in 1964.
Bess Taffel was born in 1913.