"However, Kuranui is bound to carry out this prosecution by the Education Act. We are obliged to take steps to prosecute when all other steps have been exhausted and this course of action has been approved by the Ministry of Education."
Mr Shepherd said the school had followed a "highly prescriptive" process aimed at supporting the student and parents at every step of the way.
"This has been a two and half year journey, but with no improvement in this student's attendance, prosecution has become necessary.
"Teachers and agencies have worked hard to ensure that this student receives an education at Kuranui and there has been a process of clear communication, face to face meetings and family group conferences to try to resolve this matter.
"Ultimately our responsibility is to ensure that every Kuranui student receives the preparation they need for later life and we make no apologies for taking that responsibility seriously."