what i have seen in school masses (I am assuming it is elementary?) is that intentions were written by the 8th grade candidates for confirmation and it was rotated among the students.
At my children’s previous school, readings, intentions, prayer of the faithful was rotated between the different grades starting with the 3rd. That class then put together the intentions and prayers and took turns doing the readings. It seemed to work very well and introduced the children to doing parts of the mass that they could. Altar servers also came from the presenting class as well as those who brought up the gifts.