My name is XXX, I am a middle school student of XXX sschool. I am so glad to be here and tell you something about our school.

We study in a beautiful school,since the day I came here I have began to love her. 我们学习在一个漂亮的校园里，从我第一天起就深深的喜欢上她
Flowers and trees are the most beautiful things in our school.No matter where you are,you can smell the clean air in our school,when you are tired you also can sit on the chail under the big tree.suddenly you will feel so cool,and at that time you must lose youself in enjoying it.
话花朵和大树是学校最美的东西，不论你在哪你都可以闻到学校里空气的清新味道，当你累了，你同样可以做在大树下的椅子上休息，刹那件你会感觉如此凉爽，那时请尽情享受吧！
And there are also many many good teachers in our school,they teach us so carefully in each calss,and when you meet hard problem they won't stop telling until you understand.So we often have good markes in the examnations.
同样学习有许多好老师他们仔细的教我门每堂课，当你遇到困难，他们会停下来告诉你，知道你会为止所以我们总是在期末考试中取得好成绩
Oh sure the students here are the best, we study hard and live together happily,here you never can see we quarry with each other and hit each other because here is a big warm family.
哦，还有，这里的学生也是最棒的，我们努力的学习并且共同生活，再这里你看不到我们争吵，大家因为我们是一个温暖的大家庭
So many things I will say,but the most important thing is that you come here ,I think you must love our school.Because everyone here loves it!
我有很多的话想说，但是组重要的是你能来到我们学习，我想你也一定喜欢我们学习，因为我们每个人都爱他！

也不知道你的演讲内容是什么样的，就随便找了一个。。