Perhaps, although I'd like to make two points: firstly, I'd already questioned the indoctrination before even going to High School, which reinforces the idea in my head that this was more about personal matters than the school I went to; and secondly I'd object to describing it as "indoctrination", at least in terms of my immediate family. It would be stretching credulity to say that my father, an atheist, played any part in indoctrinating me into a Christian faith, for example. My mother did insist on my going to Church until I was 16 (or was it 18? I can't remember which now...), but after that I was free to make my own choice.
From my perspective, the reason there was some struggle and uncertainty was because it took a long time to separate my mother's religious beliefs from the rest of her life. It wasn't indoctrination; I was exposed to religion, sure, but not threatened with eternal damnation or the like, and it never stopped my parents (both atheist Dad and Christian Mum) from encouraging my interest in Science and Maths. Indoctrination seems to me to require teaching someone an idea without any reference to its alternatives, and while also cutting them off from hearing about such alternatives. That categorically did not happen.