All right. So, they might have been bigoted, or they might have been ignorant. You are willing to "extend the benefit of the doubt" to them, and assume that it was ignorance, based on the time at which the incident described occurred.
I'm guessing that more recent incidents, such as the case I frequently refer to in Palatine, Illinois, from just a couple of years ago, could only be explained by bigotry. (That was the case where the 17 year old asked, "Can she put the towel over her eyes?") After all, it was much more recent, and since it involved a controversy over an extended period of time, a discussion at a school board meeting, and an actual lawsuit, there can be no doubt that the position of the school board was explained sufficiently that there could be no excuse for continued ignorance.
To my way of thinking, a high school girl who didn't want to take off her clothes when the person next to her has a visible prick might be more accurately described as "normal".