I think students should learn knowledge in classrooms rather than going on field trips. You see, the major goal of students going to schools is to master the basic knowledge and achieve high grades. Thus, compared with field trips, staying in classrooms to study can enable students to have more time and energy to concentrate on their courses. In other words, they’re more likely to succeed in academics. There is no denying that students can relax and acquire knowledge in different fields by going on field trips including zoos, museums and parks. However, this is only the second position. More likely, students will be obsessed with the vacation and can’t be back to study in time.