A student may demonstrate proficiency by meeting both the units of credit and assessment requirements. (1) The student must receive a grade of C or higher in four units of credit in a language other than English. All four units of credit must be in the same language other than English and shall consist of language courses, language arts courses, content area courses or any combination thereof. For the purposes of meeting the requirements of this option, a student may not use units of credit in English language arts or English as a second language for English language learners. (2) The student must meet the assessment of proficiency requirement as follows: (a) the student must attain a score of three or higher on an advanced placement examination for a language other than English; or (b) the student must attain a score of four or higher on an international baccalaureate examination for a higher-level language other than English course; or (c) the student must score proficient on a national assessment of language proficiency in a language other than English; or (d) the student may demonstrate proficiency by passing a New Mexico assessment in a world language other than English.