What Drugs Cause the Biggest Problems?

I had a high school principal call me yesterday. 

He started out by saying,

"I need a drug education program for my teachers as an In-Service for the 2011-2012 school year.  Your problem was recommended, but I was curious about which drugs you cover in the presentation?  We have a specific problem with a few drugs and I want to know if you could tailor the program to those issues for our school?"

This is exactly the type of question we love getting.  The answer is yes.

I told him,

"We're experts on alcohol, marijuana, ecstasy, methamphetamines, cocaine, heroin, prescription drugs, tobacco, and inhalants.  You can select four of these for me to go more in-depth during the 90-minute presentation."