I have been working as a graphic designer for roughly 2 years at my local newspaper, I trained under the previous designer who taught me everything I needed to know for the job at hand. Problem is I'm a bit stuck. I don't feel as though I'm improving or that this job gives me an outlet to improve further. I work primarily in Illustrator CC and feel confident with it and occasionally Photoshop and InDesign where my skills are clearly underdeveloped.
Is a formal education my best choice? What other options do I have?