How do you say the nurse quit the league?

You can tell parents directly in the parents group that they have resigned for X reasons and have a new job waiting for them. Say it directly, don't hide it, because it's their own reason. Job-hopping is a normal thing. It is possible that a new job will give you more room for development, so it is much better to speak directly in the group than not to speak at all.

Nurses don't need to send a notice among parents, but only need to report the contents of the conservation work to the head teacher, who will publish it among the parents of the class.

Dear parents and children, thank you for your support, trust and help. During my stay with you, I felt the sincerity of my parents and friends and the happiness brought by my children. These will be wonderful memories in my career. Unfortunately, for various reasons, I have to leave my job now. Kindergarten leaders will arrange for other teachers to take my place. Please forgive me for the inconvenience!