As much as I dislike it, most of the times when you are on someone else's playground, you have to play by their rules. When the govt. comes at you saying "internet needs to be censored because who will think of the children", making up another "think of the children" argument has more mass appeal than talking about how free and open is good.
> Like most state-financed schools, the district’s budget is tied to average daily attendance. If a student is not in his seat during morning roll call, the district doesn’t receive daily funding for that pupil because the school has no way of knowing for sure if the student is there.
So if this is all there is to it, why not just have a swipe-in and swipe-out at the main gate? If a student has swiped-in, he has entered the campus. Swipe-out will be just an assurance that the student didn't swipe-in and leave immediately. And is some students are concerned that it's still a smart card and can be used for tracking, or they really don't want it on religious grounds, have a biometric system(thumbprint or retina). That will be cheaper than giving everyone an RFID card.