请英语好的朋友帮我改一下这句话的语法错误吧 非常感谢~~

请英语好的朋友帮我改一下这句话的语法错误吧 非常感谢~~
Students graduated from the college which prepared for their students future usually can get a decent job, therefore, it will improve the reputation of the college, and attract more excellent students to the college