According to the article, she is not being charged with statutory rape because all the students where over 18. That being the case, why should she be facing criminal charges and 20 years in prison?
I can see why she ought to be fired and have her career as a teacher ended, but criminal charges, never mind 20 years, is ridiculous...
Operating a train without a license?
To make matters even worse, if they were drop outs, no law would have been broken. This is idiocy to the extreme.