Kaahu's iwi are Te Rarawa and Kai Tahu.
Her older siblings, Tawini and Te Hau, are studying at the University of Otago and are previous recipients of the same scholarship.
Both are Northland College former students.
Kaahu's partner head student has been awarded a university scholarship also.
Head boy Benjie Powick received a general excellence scholarship to the University of Auckland.
The award covers all tuition and compulsory fees and two trips home a year, as well as an allowance of $5000 per annum for at least three years of fulltime study, which can be worth up to $50,000.
Benjie will have to maintain a high grade average throughout his studies to maintain the scholarship.
He is planning to study for an engineering degree at the University of Auckland.
His older brother, Daniel, who also went to Northland College, is completing a law degree at the Auckland University of Technology.
The university had 1200 applicants for the scholarships from throughout New Zealand and has awarded about 100 scholarships for next year.