please correct this

Our school has a long tradition of having graduated many great students who have went on to excel in their fields of endeavors. In fact it has been a regular statistic that around ten or fifiteen of our yearly graduates received admissions to the nation's top five-ranking colleges and universities. Our school has two buildings that form a roughly ninety degree angle and one is slighly bigger than the other. The main builing has four floors and is home to fifteen classrooms and the administrative and financial offices are located in it. The side building has two classrooms fewer (less??) than the main building and has three floors. We have twenty-five teachers, ten male and fifteen female, including a pricipal and vice-prinicipal. I might add that 50 percent of our teachers have been teaching here for more than four years -- to me, that says a lot about the school environment. We are continually updating our classroom equipment to keep up with the trend and trys hard to maintain a friendly and comfortable study environment to our schools. If you have been searching for a special school to spend next four years in a school that can offer you challenges and at the same time, opportunites to better yourself in a supportive atmosphere, you should condider us seriously. Please call me anytime for more information. Thanks.