Debating is a tactic that helps in teaching. Indoctrination is a tactic in teaching too, in which you seem to agree with.
"When you listen to a debate about alchemy and chemistry, but are taught that they are both legitimate fields of study, you do a disservice to the student."
There is no disservice in letting students know what alchemy is and why people may think it is illegitimate or legitimate. It is a disservice keeping students from learning what it is. Children not taught of such things find out about them and dont know what to do when confronted by them. Its no wonder why kids get into witchcraft when they dont learn what it is about in school but from their peers.
Debates are great, but when it comes to teaching, you teach evolution in science class and creationism in a religious studies class, alongside other myths.
Liberals have put a stop to any teaching from the Bible by law the only way they could override the will of the parents. Now the myth here is that Evolution is taught as a fact in government schools.
Right, but when TEACHING, you need to make sure that you TEACH that alchemy is not legitimate.
Although knowing your level of scientific knowledge, I will leave open the possibility that you very well might believe alchemy is just another way of doing chemistry.