I was thinking the same. I don't have children yet but I would tell them to ring the office. I don't check my email during lessons, just at lunch. Granted I have a room of five year olds but still how does she have time to check emails?!?Maybe she told them not to ring her in work…!
We are not meant to use our mobiles in class so nursery know to call my school directly if I don’t answer my phone - if they emailed me whilst I’m teaching it would be the end of the day before I’d read the message!