Dd came home from nursery on Wednesday with sunburn on both legs. I'd supplied a named bottle of sun cream and a hat so am a bit shocked and surprised that she got burnt (she is very pale and I expect it wouldn't take long for her to burn- has never happened though!). They are phoning me back very soon and I wondered what I should say/expect of them? Is an apology and/or an explanation sufficient? She's been there for over 3 years and we've had no issues so far.