Answer:
Based on your categorization of this question, I assume you mean the requirements for admission. You must submit the following:
-Common Application (this includes your essay)
-BU Supplement (this will be on the common app website)
-$75 application fee (also through common app website)
-High School transcript (you will also have to send a midyear grade report to update them on your Senior year first semester grades)
-Teacher Evaluation (sometimes called a Letter of Recommendation. Your teacher will submit this. You cannot read it)
-Standardized Test Scores, either SAT or ACT (CollegeBoard or ACT must send these; you cannot submit them personally)
-SAT subject test scores required by the specific program to which you are applying
-Portfolio or Audition if you applying to the College of Fine Arts
-Interview (encouraged but not required except for nonperformance majors in the School of Theater and finalists in the Accelerated Medicine and Dentistry programs
-If your first language is not English, you must prove through an exam that you are proficient
Those are the bare minimum requirements. If you want a good chance of being accepted, most accepted students have an SAT score of 1800 or higher or ACT score of 25 or higher and a GPA of B+ (3.33) or higher (academic rigor of your classes and school is considered, so if the data is available, look up the GPA of students from your school who were accepted. Your college counsellor can help you with this). Extracurricular activities, quality essay, and good letters of recommendation are also key.