My daughters school does not allow parents to go to the classrooms to get their kids. They must be brought to you by a "runner". You have to make an appointment to speak with a teacher.
I just can't stand it... I know they do that in jr high..but not in elementary school..at least in our area. If the schools don't have anything to hide..they don't need runners escorting peers.
I realize this is a security issue..and they don't want the kids being kidnapped etc. If I'm going to check my child out of school, and I feel it necessary to "pop in" to the class room unnannounced, I will do it, and I will escort her to the office and sign her out. I've done it before. I wouldn't just walk out without telling the office.