Take your time and be available to listen without judgement to all of your child's feelings about their teacher. Follow your child's lead and let them guide the length of the conversation. It may be a quick exchange, or it may be a longer conversation. Following your child's lead is crucial to help develop a relationship where they feel comfortable coming to you for support.
Try to learn why your child feels this way. You can ask questions likes "Can you tell me why you feel this way?" or "Did something happen today at school that makes you feel that way?" Be careful not to pressure your child. If they can't articulate their feelings, let them know they can come to you to talk if they want with statements like, "If you think more about it and want to talk about it, I'm here to listen."
Try to avoid making negative comments about your child's teacher in front of your child.
Try not to contradict your child. For example, if your child says 'My teacher hates me!', avoid statements like 'No she doesn't, she cares about you!' 'Don't be silly, that's not true.' or 'Teachers have a really hard job, I'm sure she is doing her best.'
Sympathize with your child's experience. To take the same example, if your child says, 'My teacher hates me!', you can respond with statements like, 'That must be frustrating, I'm sorry to hear that.' Or, 'That must be really difficult. Would you like to tell me more?'
If your child opens up to you about their experiences with their teacher, praise your child for opening up with statements like 'Thank you for telling me'.
Continue to be available to talk with your child about school, their teacher, or any other topic.
If you child continues to be upset, contact their teacher or school administration.