Can a highschool student with my grade history look forward to law school?

Right now you should back up a step. Law School comes after you have a bachelor's degree.

So right now, you need to crack down and make A's, have stellar SAT's, and DO something to make you interesting to an admissions board for your college degree.

Once you get into college, work your tail off. Make A's, be on relevant committees, get involved in your undergrad campus stuff. Get your major in something allied to the law or that transitions nicely into law or that is considered really "difficult". (English, Math, Theology, those kinds of degrees.)

Your high school grades will only matter in that they determine the kind of college you go to. The college you go to, along with your a BUNCH of other factors will decide what kind of law school you can get into, or if you can get int law school at all.

There are many criteria they review when considering applicants, but if your cumulative GPA is average or better than average I'd say they would not use that merit to exclude you.

Other factors aside from grades could certainly come into play, but I don't believe those grades would be one of the reasons they would deny acceptance.

Failing classes is certainly not beneficial for you, but if your overall GPA remains high and the classes you failed weren't explicitly law-related then I'd say you're fine. For example if you failed an Ethics class I would say that will hurt your chances, but if you failed Home Economics I doubt they'd care (although they might be concerned that someone actually managed to fail HomeEc).

You can absolutely still get into law school. Honestly, it is all about your undergraduate grades in college. I didn't do too well in high school but did extremely well in college. If you excel in college, you should have no problem getting in law school after you obtain your undergraduate degree.