According to the Undergraduate (UG) Registrar, "A student may have a two-course load in any 3 terms, as a maximum, during his or her college career. There is no reduction in tuition associated with the taking of a two-course load." Read the full policy here.
Dartmouth considers all undergraduate students to be in full-time status when they take a two-course term, for a maximum of 3 terms. The Student & Exchange Visitor Information System Program Office ("SEVP") has approved this option for F-1 students. Therefore, undergraduate students in F-1 status are allowed to take up to 3 two-course load terms without any immigration consequences. Matriculating transfer (MT) students have different two-course load allowances. MT students should refer to the Registrar's website.
OVIS will issue an explanatory memo the first and, if applicable, third (last) time a student takes a two-course term. The memo should be kept with other permanent immigration records.