In my freshman year of undergrad I was a chemistry major. However, I hated it and because I hated it I did not do well in my chemistry classes. Because of this, I cheated on a midterm as well as a problem set by over collaborating with another person. I got caught and was called in - but long story short, I ended up confessing and was put on leave for a term. During this term I spent a lot of time thinking about what I did, volunteered at a summer camp, and spent my time productively. I truly regret what I did but I cannot change the past. When I came back, I switched my major to math because I hated chemistry and I wanted to pursue my true passion. However, I now soon will apply to graduate school for math. I am planning on disclosing the academic dishonesty I committed during my freshman year. Nonetheless, I am worried that my application will be dismissed entirely because of my cheating incident. Obviously cheating is a big red flag in any student's application. But will I even have a chance at being accepted at say a mid tier math graduate school? Will it help if I manage to get the undergraduate dean whom I confessed to, to write a letter on my behalf?