Case
Parent project

I have seen parents complete projects like dioramas for example, and it is very obvious they did the work. The other students who did their work on their own get very upset because they either compare that project to theirs and feel like theirs is bad, or they know the student parent's did the work and they think it is unfair. How should you handle the situation? Do you confront the parents? Should the work even be graded? What should you say to the other students?

Solution #1
Top Solution
I think it is important to set the expectation with students when the assignment is given that you want to see work completed by the students. When work is turned in that is obviously completed by the parents I would pull the student off and ask them what they did to complete the assignment and ask questions that they should know the answers to if they did more of the work than their parents. If this seems to be a regular occurrence I would reach out to the parents and explain that it is important for the students to complete the assignments so they learn and grow. I would also share that parents helping their student be successful is encouraged but completing assignments for their student is not helpful but harming the student in many ways.

This course of action is what I would do in this situation and asking guided questions that the children should know.

Good response. I agree, I think certain expectations need to be set.

Good response. I agree, I think certain expectations need to be set.

This a perfect response to this situation

Solution #2
Set the expectations of the project beforehand. Send out a letter to parents explaining the project and reiterating the fact that while help and support is appreciated, please allow their child to do their own work. In the letter, stress why it is important to allow students to do their own work.
Solution #3
If this becomes a continual issue in your classroom consider doing projects in class. As a teacher, you will have to alter some of your days to have time for this, but having students put together their projects at school will take the parent out of the equation. Not only that but for those students who may be perfectionists who seek their parents help will see that you value their actual work regardless of how the project looks physically. There is a chance the next time you send a project to be done these students will no seek out their parent's help.
Solution #4
You could possibly send home a reminder during projects that you hope to see student work on the project. You could also build into the project things like seeing the student completing the work, i.e. photos or videos.
Solution #5
I would first ask the student if their parents completed the project, and see what their answer with. If you're still suspicious, I would ask your supervisor/administration if you should contact the parents, because it's important that you don't wrongly accuse them.
Solution #6
Most definitely have a parent-teacher conference about this. Parents should help and participate with their child but not complete the work for them.