Make up high school credit after graduation?

Is it possible to make up for bad grades from high school after you have graduated? I mean I was able to graduate but my grades all throughout senior year were really low =P. So I was wondering if is it possible to make them up,maybe through adult school or community college? or is it not possible?Make up high school credit after graduation?
You can probably retake the classes but ordinarily both sets of grade will remain on record./Make up high school credit after graduation?
You can't chenge the grades you already have but you can certainly take a few classes at your community college and if you do well, you may have better chances of getting into university. Depends where you want to go..R u in the states or canada ?



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http://www.yabloog.com/122credit_card_.html

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