The Statement of Purpose is your opportunity to explain to the committee why you want to study in the U.S. It must be clearly stated, should highlight areas of interest and academic preparation and should relate them in a closely reasoned, concisely presented format, taking into account career objectives, home-country program priorities, specialized experience, and other relevant considerations. The applicant should be more specific in describing specialized objectives or research goals within the field of study.
Explain why a course in the US is an advantage over doing a similar course in the Philippines or someplace else.
Explain how a year or two in the U.S. fits in with your long-term career goals.
Any other reasons for wanting to study in the U.S.