How to verify a proof prior to peer review in mathematics I think I have found that squared magic squares cannot be constructed which is an unsolved problem.
I have searched for months for any mistakes and I could not find any. I have sent this to Mr.Boyer who hosts the page yet I ended up not being able to regain contact with him after he stated he found an error in my paper. However, as I think I have been aware of the error (if clarification is needed, I will do so) and have resolved the error later in the paper, I doubt that it was, in fact, an error. However, I have no method of confirming this except by myself.

Hence, I think that the only method I have left is submitting to a peer-reviewed journal. Yet is there a method of verifying the proof prior to this? I have heard that the procedure of peer review may take years. 

I am only a high-school student thus I do not have any connections to mathematicians.
Ask your teachers. They know you well, probably know math better than you, and are your closest connection to the academic world. That means they're the most likely to be willing to look through your proof, capable of finding an error you didn't spot, and if they can't find anything wrong, they'll know who to approach next (e.g. their professors from when they did their degrees).

You could conceivably approach math professors at your local university directly, but you risk coming across as a crank and being ignored. If you're able to get your math teacher to vouch for your proof, that would lend strength to your claim.