Ailing private school Wanganui Collegiate will have received $3 million of extra government money by the end of the next financial year.
Earlier this year, the Education Ministry said more than $800,000 in extra funding had been given to the school to keep it going while it negotiates becoming a state integrated school.
Budget figures show the Government has set aside a total of $3 million to support the school.
The Government is facing criticism for its plan to increase class sizes in public schools, while private schools continue to receive subsidies.
A spokesperson for Education Minister Hekia Parata says the additional funding is to help the board meet its financial obligations, while negotiations over possible integration between the board and the Crown continue.