Before Long Bay College, she held senior positions at Auckland's Western Springs College.
Kilian said ACG Tauranga had phenomenal potential in a fast-growing environment.
"Visiting the school, I experienced a real sense of care and community...in order for our children to achieve success they must feel safe, connected and engaged. Only then are we able to inspire and challenge them to develop."
Kilian said she had a personal interest in the crucial role that mental well-being played in the success of young people.
ACG's chief executive of schools and early learning, Clarence van der Wel, said Kilian had a deep understanding of education and knew what high-quality learning looked like.
Kilian holds a Bachelor of Science degree with a double major in mathematics and botany and a Bachelor of Science postgraduate honours degree in mathematics. She holds a National Excellence in Teaching Award.
ACG Tauranga is a co-educational private school offering programmes from
preschool through to Year 13.
- John Cousins