Nah, we're going to encourage our kids to succeed, and give them all the tools they need to be successful. Whether that means more one-on-one parenting, tutors, etc, we'll do whatever it takes.
By the same token, if we see our kids really trying their best, and they get mostly A's and B's with the occasional C, we'll be ok with that. What neither LG nor I will stand for is laziness. If you're slacking off and getting C's, you can be damned sure we'll be on yo' ass.