What would 당신 do?

The seniors at my school have an exam in my Chemistry 2 class tomorrow. My teacher has given us the option as to whether 또는 not we want to take it with them. I and one other person are the only sophomores in a class made up of juniors and seniors. There's a little over 30 kids in our class. The other sophomore is taking the exam tomorrow along with 98% of the rest of the class. Only one other person and I are staying out so we can get 더 많이 practice. Our exam is in two weeks on June 10th. I have a C in the class and aren't prepared at all. Would 당신 take it with them, 또는 get 더 많이 practice if 당신 were in my position?