Do What Is Necessary
"Trying one's best" and "Caring" are better than not trying one's best and/or not caring.
Reluctant as I am to use such strong and absolutist language, there is only One Acceptable Standard: Getting done what is necessary to get done.
And evaluate those in your charge accordingly.
Before blogging became all the rage, Tom was posting book reviews and Observations (essentially early blog posts) to this site. You can find the archives below.
What we're talking about
on the front page.