How will this hinder my chances of getting into a good college?

I am a student-athlete at a vocational highschool where i study both forensics & criminal justice, i have all honors cles (and an AP cl), I'm heavily involved in extra-curriculars, I am currently sec. and treasurer of the student body government (the only junior with an officers positon) and am in other clubs like gifted & talented etc. I take my school work serious because I want to get into a good college. My discipline record consists of 1 offense for being tardy to cl. Recently however I have been accused of helping my friend plagiarize a summer reading igment. What actually occured was that I asked my friend to print the work for me (along with her work) because my printer was broken, this was the day before school started. she was kind enough to do print out my work for 3 books and her work for 6 books. I didn't see her the morning that school started and so I panicked and told her I'd print my things out in one of my teachers cles, I did so to be sure I had everything by the time I was to hand in the ignment and didn't have to depend on her having it right on the spot. As it turns out 3 months later my friend accidentally stapeled my essays to her work in the rush of getting 60+ pages stapeled together and seperated (the work for my 3 books about 20 pages, and the work for her 6 books about 40 pages). So my teacher was grading the summer assignments and came across it and accused us of plagiarism, my friend was honest enough to admit that the work was not hers and that she wasn't plagiarising that she simply made a mistake when printing out my work. Anyways we both received F's on the assignment even after my friend showed my teacher her essays (the same day to prove that she had them saved on her computer) and we both now have a note in our discipline file that says Reprimand for Plagiarism. There is no specific details and I've been told colleges will view it and will reject me (by my teachers, and guidance counselor, etc.)