Tamikah,
I agree (but use the "B" as a threshold for intervention). I also try to base the "B" work on tests and quizzes, not the overall grade because that often has softer assignments mixed in and may not be truly effective of the level of knowledge the student acquired. Frequent and early on discussions work best for me, as I want tiome to offer my support and encouragement, along providing enough time for corrections or improvement to make an impact on their grade.
Barry Westling