Возможно это будет выглядеть так
First of all each pupil ought to know about his school and education as he is entitled to it. Secondly, while participating in such discussions he can help his school by suggesting ideas and advices . For example a pupil can advise a good idea in holding a Teacher’s Day festival . Thirdly, when pupils attend meetings, teachers have a possibility to learn more about them and it can facilitate in teaching of any subject
On the other hand pupils are not adult and there is no need for them in learning a lot about training. Moreover sometimes it influences on their marks, because they can be distracted from lessons. For example they are far too often exempted <--(в этом слове абсолютно не уверена) from lessons for participating in such discussions.