There is a wide spread concern over the issue whether the middle school students can bring their mobile phones to school. But it is well known that the opinion concerning this hot topic varies from person to person. 

The majority of people think that it is of benefit to bring phones to school. In their view, there are 2 factors contributing to these attitude as follows: In the first place, they hold the view that mobile phones can help us study well as useful tools, students are able to find the information they want as soon as possible. Furthermore, using our own phones to chat with someone is much more convenient than borrowing teachers’. So it goes without saying that some people think it essential for students to bring phones to school. 

People, however, differ in this opinions of this matter. Some people recognize that students bring their phones to school is impulsive. In their point of view, on the one hand, most of students can't help playing games with phones in their spare time instead of using them to study. On the other hand, if students can bring phones to school, the time that they use phones will increase definitely, and it may do harm to their eyes. Therefore, there is no doubt that it is harmful for students to bring phones to school. 

As far as I'm concerned, I firmly support the view that disagreeing students to bring phones to school. It is not only because watching phones for too long is bad for our eyes, but also because the rings of them will disturb us while we are sleeping.