Weight loss goals

Unfortunately, our bodies don't always run parallel to our own expectations and desires. While it would be possible to lose that much weight by August 22, it's not a good idea. It would require means that simply aren't justified by ANY end, including unhealthy crash dieting (which is unhealthy for your body AND your mind/self image). Don't rush off the weight any faster than you'd expect it to rush back on - because that's more than likely what will happen.

At least for me, I've found I have better luck with slower goals that won't discourage me and using my willpower to stick to my guns than use all that willpower to crash diet, lose weight, and then feel crappy and gain it again.

I just reset my goals to lose 1.5 lbs per week (I've seen a lot of posts on here about if you set it too low, you'll actually gain weight, etc). And the little pop-up at the bottom of the screen said that I should expect to lose 7.5 lbs by August 7th. Is there any way I could lose more by then? Upping my exercise, lowering fat, something? I'm impatient, I know, but I really want to lose at least 15 more pounds by the time school starts August 22nd....

Actually, you have it backwards. I don't know what idiot was telling you that. If you lose weight too quickly it will be most likely a lot of muscle and not a lot of fat. Plus you will be more likely to harm your BMR, and gain the weight back because it is really hard to lose that much weight a week (unless you're severely obese). Take it from someone who lost 30lbs in a year (and has kept it off five years later), I can tell you losing a half pound a week not only is the best way, but it's practical.