There is an opinion that asserts a lot on the issue of whether experiments should be done by students or teachers in primary schools.Some men and women would suggest that it is their students right to examine since it enhances children's comprehension in many sciences;however, my personal attitude toward this is that experimenting by students may cause many dangers that will harm them, instead ,teachers must do many examinations as they have more experience than students.I will present two principal reasons in the next paragraphs.