Martin and I think that a conceptual criterion is the best kind, and AFAIK Physics.SE adopts this viewpoint too. Maybe the community thinks that a conceptual criterion isn't the best idea, which is fine - it's really okay (and it's great) to disagree - but we would really like to hear some alternatives. Do
Maybe you simply want to get rid of all high school chemistry questions? If. To be honest, I get this feeling sometimes, but it's obviously an untenable position. I feel that the best way to deal with this is to efficiently close as duplicates (there are only so many high school concepts one can ask about!), would it be better for usand get users to at least say that outrightask more high-level questions, instead of selectively applying a "no effort" criterion?as this recent meta post by NotEvans suggests.