learning curve

Sign that I know I'm being too hard on my 7-year-old about her grades:

coming home from school yesterday, I was admonishing her for getting a "C" on a math test. Prior to this, she'd never gotten a "C" before in anything. After about 3 minutes of me going on way too long about it, she says, sobbing,

" Oh mom, I need to go to Sylvan!!"