FAR 61.83: "To be eligible for a student pilot certificate, an applicant must: (a) Be at least 16 years of age for OTHER than the operation of a glider or balloon. (b) Be at least 14 years of age for the operation of a glider or balloon. (c) Be able to read, speak, write, and understand the English language....."
So on the basis of the above FAR, you're almost old enough to be a student pilot. I know the feeling of wanting to start flying when at a young age....but turn lemons into lemonade....save up your money to pay for it once you're old enough. Hope this helps....sorry to disappoint you.