本作文是关于小学三年级300字的作文，题目为：《我们学校发生的巨大变化(Great Changes in Our School)》，欢迎大家踊跃投稿。
I'm a student in a middle school. I'm glad to tell you that our school has changed a lot in the last year. Our school is much bigger than before, big buildings were built up and trees were planted. We also have a big garden now. we can sit and relax ourselves there. The playground is much bigger and more beautiful than before. The headmaster told us to be polite to our teachers and we did as he told. I always help my teacher to carry things. Now we are in Grade 3, we have to work harder than before. Students keep on their homework in their free time. I think it is good, but taking some exercise is important, too.
Now our school is more beautiful, we are more polite to our teachers and we like to study very much. I think our school has changed in many ways.