Hi, I've had my BB Pearl for just a few months now. I use it for the calendar, contacts, and phone. My problem with the ringtone is that, now that I have special rings for different contacts (set up through exceptions) when I silence the phone the exceptions still ring through

. I work in elementary schools and need the phone to be silent when I am in a classroom, but I don't want to turn it off because that is my link to all my work. Sorry if this is a dumb question, the BB has turned out to be more complicated than I expected. Any help?
Thanks