Not wanting to go school

What do you think can cause a child not to want to go to school?

We watched a video about safe touch unsafe touch, some months later in this preschool class my child said that the children when the teacher's are looking away they will tickle or touch each other's privates. I was shocked took child out for a week today Monday I said let's go back to preschool told me that the girls have been looking at each other's privates and the boys look touch each other's privates he said he doesn't want to go back.

I'm not sure if he's making this up or said this because of the safe touch unsafe touch books and educational video. I know children lie and also have imaginations.

I'm not sure what is going on because the teacher's are licensed early childhood education teacher's the school is great. I thought the class was okay I'm not sure what to do

I told to stay away from those kids play with other kids but still doesn't want to go back to preschool

I feel lost like how will he protect himself

There's elementary school how can he keep himself safe