I think the title is somewhat misleading. When they discussed this on NPR yesterday it was "more street injection drug users" than high schoolers. I have no do

I think the title is somewhat misleading. When they discussed this on NPR yesterday it was "more street injection drug users" than high schoolers. I have no doubt there are more drug addicts than high schoolers. I think you'd be hard pressed to find any major city where that isn't true. If your definition of a drug addict is anyone who uses drugs (including marijuana) regularly.