A small irking

I am in a ballet class this semester.  Our required attire is pink tights and a black leotard with pink ballet shoes; for the gents it's a fitted t-shirt or leotard with black tights, leggings, or biking shorts.  There is an addendum to the dress code requirements in the syllabus: "Proper modest cover up is required for hallways if the distance traveled from the locker room is half the length of the RB or more."  Our classroom is quite close to the locker room, so this doesn't apply to us; however, it still irks me.  

This is why: Why is it OK to be dressed in a leotard and tights in front of men in your ballet class but not in front of men in the rest of the RB?  Are they not properly prepared?  Have they not mentally steeled themselves to fight against your tempting ways?  (This is all based on the assumption that the covering up is for the students of the male persuasion, of course.)  Why is it so wrong to walk through the athletic building, which also features an observation window of the pool where team members are wearing bathing suits, in ballet attire?  I could see the point of not walking around campus or through other buildings in ballet attire, but this is the athletic building, where it's expected that people will be in workout/athletic clothing. 

I know it's a small rule tucked away into the syllabus, but the principle of it still bothers me.  It's one thing if you are personally uncomfortable with showing your body and want to cover up; it's another thing for that action to be mandated as a rule.  Although the context is different, you're actually being more modest than you are wearing a bathing suit.  Why is the context of the hallway versus the classroom so different? 

I'm not blaming the syllabus, but this rule actually makes me feel some shame for walking around outside of the classroom in my outfit.  I feel like I should feel bad because the rule implies that there is something wrong with it.