The law and regulations require that every applicant must have at least a high school education or its equivalent or, within the past five years, have two years of work experience in an occupation requiring at least two years training or experience. A "high school education or equivalent" is defined as successful completion of a twelve-year course of elementary and secondary education in the United States or successful completion in another country of a formal course of elementary and secondary education comparable to a high school education in the United States. Documentary proof of education or work experience should not be submitted with the lottery entry, but must be presented to the consular officer at the time of the visa interview.