Hey Katelyn,
I totally understand how you feel. Since I was 10 or 11 years old I felt this passion for dance. And deep down I always wanted to become a dancer but my parents are academic freaks, so that was sort of a problem. And they put me in piano, which was also not my passion.
So I just did hip hop on my own. And I would practice by watching music videos and such.
However, I had always wanted to be trained in dancing, because there are so many forms of dance that you absolutely need training (i.e. ballroom). So I decided to take lessons. How did I pay for them? I used money that I got from some scholarships (not dance scholarships, academic scholarships) plus some money I made during the summer, and that is how I'm able to afford the lessons. But without that money, I would never be able to afford the lessons.
So, what I can recommend is, don't rely on your parents to help you with it. Just work really hard during the summer, and hopefully you'll make enough money. If you are in university or college, you have a good four months and you can make quite a bit of dough, enough to get some pretty good quality lessons. If you're in high school, I say take it easy on the quality of the lessons.
But good luck, and keep us updated on the situation!