well, to say teachers absolutely can't discuss personal beliefs in class is probably a violation of free speech, at least in the US.
Personally, as long as the discussion doesn't significantly detract from whatever lesson is being taught, i.e. not wasting valuable class time on tangents, then I don't have a problem with it.
Also, barring teachers, or anyone else for that matter, from discussing beliefs in front of your children simply because those beliefs might be different from your own is unwise for two reasons: Firstly, there's no way to make a robust policy out of that. One man's gospel truth is another man's dangerous heresy, and school districts cannot and should not be made to judge between the two. Secondly, as a parent, YOU hold primary responsibility for your child. If you have a particular set of beliefs that you wish to pass on, or guard your child against, the onus is on you and no one else to accomplish that. Contrary to popular opinion school is not a substitute for active parenting.
Personally, as long as the discussion doesn't significantly detract from whatever lesson is being taught, i.e. not wasting valuable class time on tangents, then I don't have a problem with it.
Also, barring teachers, or anyone else for that matter, from discussing beliefs in front of your children simply because those beliefs might be different from your own is unwise for two reasons: Firstly, there's no way to make a robust policy out of that. One man's gospel truth is another man's dangerous heresy, and school districts cannot and should not be made to judge between the two. Secondly, as a parent, YOU hold primary responsibility for your child. If you have a particular set of beliefs that you wish to pass on, or guard your child against, the onus is on you and no one else to accomplish that. Contrary to popular opinion school is not a substitute for active parenting.