Could you go to college for 2 years to be a professional singer?
I would suggest finding a personal coach and mentor more so than paying for college credits. Find someone who will help you grow directly and maybe even someone to help mentor or manage the business end of things as well. Best wishes!
There is really no hard or fast rule. Sometimes raw talent will overcome any need for formal education when it comes to a singing career. However, let's be realistic and prepare ourselves as best we can to succeed. Most talent agencies will want to see how committed you are to your craft, so a four year degree in Performing Arts or Music Theory allows them to see a part of that commitment. Taking voice lessons could be just as important to a singing career too. Learning how to read sheet music would also be key critical to a singer. Keep singing as much as you can and perfect that favorite song you would sing in an audition. Don't underestimate high school plays they are great stages for you too. So go forth and get as much exposure you can along your journey. Good luck.
Bethany, if you want to be a professional singer, start lip rolling. http://singing to success.com/ It May take you two years to develop your voice, but you do not have to go to college for two years. Frankie Valley does this, Haley Williams, from Paramore, as well. You can go to you tube and look for, Brett Manning, vocal demonstration. And you can also type in lip rolls. Some singers cry, when they do their first lesson. It did the same, for me.