When parents raise concerns with you, the basics of listening and speaking still apply. And respect and sensitivity are still key to effective communication.
Also, if you focus on the issue that parents are raising and remember that your shared goal is supporting their child, it can help you avoid defensiveness or justifications.
Sometimes the best way to help is simply listening to parents. Parents might just need to feel that their concerns have been heard. You don’t always need to look for a solution straight away.