The social waters that children navigate are tricky and the modelling and practice that happen in the immersed social world of school (and camp!) is crucial. Social pain makes us stronger and fuller people when social skills are part of the curriculum.
I love what author Rick Ackerly suggests: instead of parents asking "How was school today?" they can ask "Solve any social problems today?" Try this with any age group and you are sure to get into some interesting discussions!