I think this is a little more complicated than, "Teacher put in jail for praying."
To me this is the issue.
Should a government paid teacher be allowed to lead a prayer with students in a public school setting?
If you answer yes, then you have to say yes in all situations.
What do I mean?
Well if that public school teacher is Hindu, Muslim, Wiccan, should they be allowed to lead students in a prayer in a public school setting?
As a Christian I say a resounding, "No way Jose!" I don't want some Hindu, Muslim or Wiccan to be leadin no kids in no prayer!
Should I make an exception to my rule as long as the person leading the prayer agrees with my beliefs, or should I be intellectually consistent in every situation?
In a free society, if a Christian teacher who's paid by our government is allowed to lead public school students in a prayer, it follows that any teacher of any faith can do the same. That's how freedom works. No matter how much you dislike it!
So in a free society, the best option is just for paid government employees to remain neutral when it comes to 'leading' any kind of religious activity in our public schools.
I think jail is a little harsh. But rules are rules. And if I want to prevent some Hindu or Muslim from leading students in prayer in our public schools, then I have to ask that folks who agree with me remain neutral too.
Should students be allowed to pray though? Of course! Why? Because they're doing it on their own and no government paid official is being paid to lead them.
Just my two cents.