Are the stewards and checkers students? If so, does the responsibility change every once in a while?

Yep! They are students, and the job is for one semester; elections for all exec roles happen in the winter, and then we have a midterm election in the summer for these specific roles. These people must have been a part of cookcrew for at least one semester. I should also mention that the students in the cookcrew steward, shopper, and checker role don't have to cook as compensation for the time they put into these jobs. ~ Katie