I've had a few.
10th grade : My first one was a girl 1 year older than me when I was in the 10th grade, goth type a bit. Now that I think of it, I was pretty stupid, she's quite fugly really.
10th grade : My second one was a girl 2 years older than me, english girl, was a very nice person. Afterwards I've realized she was super clingy and nothing would've worked out.
10th grade : Third one was a girl 2 years older than me, russian girl, very nice person, the crush didn't last long, I realized that she was more of a friend type after all. We're best friends to this day.
11th grade : Fourth crush in high school is my current GF, a russian girl some 6 months older than me, we met at the end of the 10th grade and befriended quickly. We started seeing each other during the beginning of the 11th grade, going to get coffee and all that you know. We started dating last december and have ever since been together. We're now in the 12th grade.
[Edited on 08.26.2012 8:03 AM PDT]