I am not questioning your faith, nor did I even insinuate you have lied, because it never crossed my mind that you did. All I have been pointing out is that an experience you had as an eight-year-old is not the experience of all eight-year-olds.
We took different approaches, you and I. It appears you had questions. I don't know how far you went with your studies, but it seems not far because your assessment of Noah's Ark is that it is about a pair of each kind of animal was put aboard an ark. Were you including penguins in this thought?
Everyone has questions, and finding the answers to my questions took years, decades of study--a study that included Biblical languages, cultures history, etc. I am also willing to bet I spent a lot more time studying the Inquisitions and the History of the Catholic Church.
Now, it is fair enough for you to decide that if a teacher couldn't even confidently address the questions eight-year-olds have about Noah, it is not the path you care to take. You may be good at making quick assessments. Despite your assessment, there is more to the Christian faith than incompetent, miffed teachers, and there is more to Noah's story than the animals on the ark. You chose not to stay around long enough in either Christianity or Judaism to discover more. That is fine. Just don't leave thinking that because you left thinking Noah was about the animals on an ark, that every other Christian and Jew who stuck with his/her faith has that same take you have about Noah.
Best wishes that your path with Buddhism brings you the peace you seek.