Do I have to attend all 3 classes per week?
No, you do not have to.
Obviously, the more classes that you attend, the quicker you will progress and learn but there is no set number of classes that must/should be attended. Your primary goal at The Ohio State University, if you are a student, is to learn and gain an education. In this instance, Buckeye Tang Soo Do is an extracurricular activity and is meant to compliment and help your education.
One of the reasons we meet 3 days per week is to give students some flexibility in choosing which days they can come to class. Often, work or classes can clash with our schedule, and we respect that.
We do ask that you notify one of the instructors if you have a recurring situation, so we can keep that in mind when planning your development as a martial artist.