I'll sum up my thoughts:
Indoctrination = bad, especially in the formative years of a young person.
That said, religion is one of the largest influences in history and civilization and a lack of understanding of religion is a large problem in society. Something like 80% of what you might call "Bible-thumping" Americans can't quote famous verses or understand how they are supposed to be used in context.
Thusly, you get ignorance, fear, hatred...and even silly things like that jury that brought a Bible in to argue that a man should be given the death sentence because they found some random "An Eye for an Eye" quote.
Given so many conflicts that religion causes in this world, even the staunchest secularists need a good religious education in order to conduct a proper dialogue and argue their side.
There are growning numbers of highschools in the US that actually have Bible Studies courses. These are designed to be secular religious studies courses for that goal, not for prosetylizing...but that's certainly a difficult thing to maintain. It's not exactly easy finding a highschool teacher educated enough in religion, yet dispassionate enough about it to be objective. If you want to understand society and the forces that shaped it and history and philosphy, etc. in the western context...you are going to encounter the Bible whether you like it or not.
Check out this TIME article:
http://www.time.com/time/magazine/ar...601845,00.html