My experience has been that going to admins or parents usually does not solve the issue with the child but makes more work for you as the teacher in the form of forms to fill out, meetings to have and phone calls to make.
Having a power struggle with a five year old in front of other five year olds can be devastating. One choice is to ignore the behavior. Another is to address it and when she says no, ignore her until a future date when she wants something and then tell her no and remind her it is because she told you no. Spend time in a fun activity with the other children and ignore her in a way that she cannot tell her parents that you purposely did something wrong but she feels left out.
I know these are silly mindgames, but usually the child wants to be liked so if she sees other kids having fun and the teacher spending time with them, she will want that too and might shape up.
More and more recently, going to admins and parents just makes you have a reputation as a teacher who cannot handle her classroom. I know this is bull#### but that's what I have seen.
My coworker who teaches prek just had a similar issue this week. The student stole her stuff, she called the parents and principal. The mother freaked, claimed that the teacher is "labeling" her son a thief, asked for a principal/teacher meeting and threatened that the child's father was also going to be present at that meeting (whatever that means: they both have neck tattoos so maybe she hopes to intimidate everyone).
Now my coworker has to lose her planning period on Monday to deal with this whole situation. The principal might take her side internally but she will not stand up for her in front of irate parents. And the parents can now use this situation in the future to claim the teacher "doesn't like my son" or "is racist."
The easy way out would be to have a private chat with the prek student, start pretending to cry and tell him how sad his stealing makes you and keep colorful objects away from him in the future.
