[Aevery_Freeman]

In my later years, I left programming and taught high school math/science.

I would correct any errors that the teachers had made in their tests/worksheets.

I even wrote programs for them on the TI's common in the schools so they could check their answers

Was surprised that some teachers got upset.

Never lacked for work though.

[nicollo]

I would correct any errors that the teachers had made in their tests/worksheets.

Haha, I saw that all the time in my 10 yrs as a high school teacher. The sad thing is that these foolish teachers then mark off points on students for mistakes they themselves make.

Happens in all subjects, btw, not just math -- especially English.

I gave my kids extra credit for pointing out any errors I made. It was an incredibly effective classroom management tool.