My science teacher in seventh grade derailed our entire class for about three weeks for an "evolution" unit that was nothing but her showing us Kent Hovind videos and providing a "balanced" view of the topic. Being the skeptical little shit that I was, I challenged her on this at every turn, eventually getting my parents involved and sorta twisting her arm to stop the nonsense earlier than she had initially planned. This was at a Catholic school, but none of my other teachers were like her. On the contrary, my eighth grade science teacher at the same school was a huge inspiration to me and part of the reason I'm pursuing my current major.
I went to a Christian high school, but luckily the head of the science department was an astronomer who taught physics to the higher grades as well as science to the kids in years 8-9.
All of the religious stuff was left to be taught in religious studies and the science classes were great. I think that if anyone had tried to sneak in anything like Creationism he would've squashed it the moment he found out.
We even had our headmaster, who was a devout Brother, teach Chemistry when our normal teach was off on leave. He left his religion at the door and it was great.