What will happen to a first offence petty theft by a minor?

I am a minor, 16, and recently attempted to steal a 12 pack of beer with some friends. The item value was about 15$. The three of us received tickets for theft and have a court date for about a month from now. My question is how will this affect my future? I do very well in school (top 5 in my class) and have aspirations of attending John Hopkins U. and don't want one poor decision to alter the course of my life. Do I need a lawyer? Will this follow me when applying for jobs/college/scholarships? If it matters, the incident happened like this: friend 1 took a 12 pack of coca cola, opened it, and replaced the contents with beer from an 18 pack, while friend 2 and myself stood at the ends of the aisle and kept watch. We then took the coca cola to self checkout. Before exiting the store, the manage asked to see the end of the coca cola 12 pack container. I handed her the box and ran. I left my car at the store and was unable to retrieve it. A police officer showed up at my door ~30 minutes later, returned us to the store, and we identified and given a ticket each for theft. I greatly appreciate any help.