of putting kids to such cruelty? Experts say it improves their health and helps fight obesity. While that may seem a little far－fetched(牵强的) the officials at the few schools around the world seem to agree.

　　Among them are educators from the College Station Independent School District in Texas, who recently completed a week－long experiment involving 480 students across three elementary schools. The 374 kids that agreed to participate in the study were provided with a device that helped record the step count and calorie consumption over the entire period.

　　All 25 teachers involved in the study reported that students appeared to be more alert and concentrate better, when allowed to stand. The one thing that did surprise the researchers was that younger kids were more willing to stay standing than kids in higher grades. They believe this may have something to do with the fact that after years of being asked to "sit still"， older kids have a harder time adjusting to this unexpected freedom.

　　American schools are not the only ones reporting success with stand－up desks. Four Catholic schools in Perth, Australia, which have been testing them since October 2013, have seen similar results. In May 2014, Grove House Primary School in Bradford, West Yorkshire, became Europe's first test one, with a seven－week trial that involved the use of desks made by Ergotron in their fifth－grade classrooms. While official results are not out yet, early reactions from both teachers and students have been extremely encouraging.

The findings of these studies and others done previously all seem to mean that allowing kids to move around in classrooms is a win－win for students and teachers-it helps kids get healthier and provides educators with a more engaged audience.