Except as otherwise provided by the Board of Regents, in order to be considered a resident for tuition purposes, you must be a U.S. citizen or a permanent resident for one calendar year (365 days). Those who are undocumented and Deferred Action for Childhood Arrivals (DACA) are eligible for resident tuition status. Complete the Undocumented Student Residency Tuition Request Form [PDF] and submit to the Office of Admissions for review.
You cannot maintain domicile in Hawaiʻi and another place simultaneously. In other words, you cannot be a bona fide resident of Hawaiʻi if you appear to maintain your domicile somewhere else at the same time.
The one-calendar-year “clock” begins when you take the first action demonstrating your intent to make Hawaiʻi your permanent residence (i.e., start employment, register to vote, purchase property, or get a general excise license).
You cannot establish residency by simply enrolling in school. If you are a nonresident student, it is presumed that you are living in Hawaiʻi primarily to attend school and that your presence is temporary even if you live in Hawaiʻi during vacation and other breaks from study.