BOISE, Idaho — TO the chief counsel of the Idaho State Legislature:

In light of the bill permitting guns on our state’s college and university campuses, which is likely to be approved by the state House of Representatives in the coming days, I have a matter of practical concern that I hope you can help with: When may I shoot a student?

I am a biology professor, not a lawyer, and I had never considered bringing a gun to work until now. But since many of my students are likely to be armed, I thought it would be a good idea to even the playing field.

I have had encounters with disgruntled students over the years, some of whom seemed quite upset, but I always assumed that when they reached into their backpacks they were going for a pencil. Since I carry a pen to lecture, I did not feel outgunned; and because there are no working sharpeners in the lecture hall, the most they could get off is a single point. But now that we’ll all be packing heat, I would like legal instruction in the rules of classroom engagement.

At present, the harshest penalty available here at Boise State is expulsion, used only for the most heinous crimes, like cheating on Scantron exams. But now that lethal force is an option, I need to know which infractions may be treated as de facto capital crimes.