This story really sends home the need to discuss safe sex with your children early.
Apparently a school in Montanna has reason to believe that some 50 of its students may have been exposed to the HIV virus. The article never directly comes and says what the nature of the exposure was, but for that many students to have been involved it's fairly likely that sex was a factor.
I know every parent has different values, and I can't even imagine what it would be like to have a child in school right now, but I urge people to make their kids aware of the options available to them should they decide to become sexually active.
This can only be done as a preemptive strike, once kids are engaging in sexual activity it's too late. They think they know everything, you have to teach them early, so safety and protection will be a part of their value system, not just something they heard about on tv.
