[EpicEng]

>I'm now remembering how frustrating was for me to take school related things too seriously and discover you cared more than your teachers when I was her age.

Perhaps it's you taking this children's assignment too seriously. Was the goal really to find who could grow the best sodium crystal, or was it to teach them how to manage a small project and learn a bit of chemistry? Did your daughter learn anything about those things?

That teacher has a bunch of other kids to educate. Maybe they don't care, or maybe you just have your priorities screwed up a bit.