Jennifer is no dummy.
She graduated from high school two years early with a 3.9/4.0 average, aiming at a career in acting.
Yeah, so? The fact that it's even possible to have graduated from her HS two years early shows that her school obviously didn't have very high graduation standards. My HS required a minimum of 26 credits for graduation, which was not generally possible in three years. The only way people graduated early is if they happened to grab a couple opportunities in middle school to take certain courses that would count for HS credit, and then managed to load up their schedule very precisely for three years. There were some who wanted to graduate early, but it just wasn't logistically possible for them.
If her school only required 16 credits, then that's pretty weak.