At our school most of the parents still accompany them to the classroom, don't you think they should be a bit more independent by this age? I dropped mine off today and watched him go in but got a couple of looks and a mum then waved at me and pointed at mine as if to say 'ok-'- as she took hers in.
I wouldn't mind but then they (mums) all gather near the kids coats chatting on and it's a bit tricky with my toddler too, there's not much space. And surely they don't need mum to hang their coat up at this age!