Well, as a parent, its concern. If your grades were mostly low Cs and Ds, then baby, you're gonna hear it til finals come. sorry.

But if you're primarily pulling all Cs and they're concerned about your typical Bs or As faltering, then simply bring home reports, tests, and quizzes to show them proof that you're picking your grades back up. Believe me, all parents have heard, "I'll de better next quarter/semester" and when the next report cards came, the grades were just as low.

Also, your never mentioned whether or not you're involved in activities (cheerleading, chess club, soccer, you name it) Studies have shown and proven that students involved in clubs or sports average a solid grade higher than those not... so your C would be a B. I myslef know that I'm much more lenient on a low C grade when I know my kid's schedule of waking up at 5:15 to run, come back home and get ready for school, go to school, go to the track team's practice, come home, do homework, go to bed at 10:00. If he pulled the grades he currently has and wasn't living that schedule everyday, I think he'd be having my foot permanently implanted in his backside. Nothing annoys a parent more than seeing their kid involved in watching tv, playing on the internet, and talking on the phone... and wasting that time doing all of those activities instead of hitting the books.

All this coming from the other side - a parent. I hope it helps you! Good luck... I know you can do it!

PS: Parents do understand that Freshman year is shockingly different. We know that teacher's demands have suddenly increased. We also know that its hard to handle the pressure, but we are only preparing you for the pressures that are only going to increase as you progress throughout highschool and college (except your high school senior year: that's a joke. you can basically sleep through that one )