Henrico County has developed a non-deletable Internet history that is installed on all high school and middle school laptops. This filter is functional 24 hours a day on any network the student may access. PLEASE REMEMBER THAT NO FILTER IS 100% RELIABLE AND THAT STUDENTS OFTEN FIND WAYS TO BREAK THROUGH THE FILTER. (This is against the Acceptable Use Policy.) Students may try to access filtered sites by logging into proxy servers or tampering with computer software. You are the best filter your child has. Helping your child understand how to be a responsible computer user, monitoring your child's undeletable history, and keeping the computer in a central location are the best defenses against inappropriate use. YOU ARE THE BEST FILTER YOUR CHILD HAS.