The personal statement is also a great place to explain more serious problems, like less_than_ideal grades or test scores. Don't be afraid to write something like, "I don't test well" in the statement. As long as you can provide a good reason for you app's problems, it's okay to address them directly. You won't be able to hide it from admissions officers anyway, so providing a reason for problems is always preferable to ignoring them.
The goal of a PS is to present useful information, thus all or just a little of the information listed below should typically be included in a PS: _ A brief educational background; _ The reasons for choosing your major, what interests you about your chosen subject, and the details of what you have read about the subject; _ The career plans you have laid out upon completion of the program; _ Employment experience, voluntary work done, particularly if it is relevant to the subject, and the skills and experiences gained from these activities; _ Any involvement in enrichment activities such as special trainings or "camps", and _ Extracurricular activities, social, sports, or leisure interests. To further aid you in the task of identifying important information for inclusion, consider the following: