GPA standards

<p>Interesting topic...S has a 3.0 unweighted average and is ranked smack in the middle of a 600 student class - only 30% of students in his school go on to a 4 year colleges...if so many students have such good GPA's, why don't more go to sollege for four years (this is a middle-upper middle income area) something seems very "off" to me...</p>