I don't think it's a big deal; they should've just sent him home in a cab. I've taught college students (algebra) while on heroin, weed, coke, DXM, benzos, haldol and liquor. Surprisingly, the most disabling of these was weed.
I have been a big fan of altered states for many years, and a teacher for most of that time, but I cannot ever teach while under the influence. I tried going to one class while I was in high school after smoking weed, and I hated it. I tried again, once, when I was in college, and hated it again. So those are the only two times I mixed academics and drugs (other than alcohol or caffeine) in a social setting. (In private, I wrote most of my dissertation while stoned, and a good portion while on small doses of LSD, but that is a different issue.)
However, a few years ago, in a country where I no longer reside, I was volunteer-teaching a small children's class in ESL. To say "ESL" is a bit of an exaggeration, however, as it was basically supposed to be a fun play time in English. I had been very stressed about the class - mostly about the behavior of the students' mothers, who just sat and watched as their small kids ran around screaming during class. To be clear, it was not my job to take care of screaming babies, and that is why I set up the class so that the parent always came with the child. I explained this to the parents on the first day of class. But some were too busy talking with other mothers to pay attention when their child was screaming and running.
After several months of this, I decided to get really high on weed and go teach class.
This had not been against my personal moral code until then, but was simply unthinkable in terms of my own happiness.
But I tried it, and managed to ignore both the lazy mothers and the screaming kids, and to focus on having fun with the kids who were participating. I had an incredibly fun time, and so did the kids. As they watched everyone having so much fun, the kids who had been screaming began to stop and to come participate.
Overall, a huge success. I had more fun, and so did the kids. More kids participated, too. Even the mothers commented "What a fun class today! The class really has gotten used to you." or something like that.
So, to the haters: go on and hate all you want, as I dared to mix drugs and children.
But I would be able to hear you much better if you could explain why it is wrong to do so. (At least, in my case. I understand that showing up completely drunk would be a different story.)
