Green Bay High School is a co-educational secondary school in the West Auckland suburb of Green Bay, New Zealand, catering for students from Year 9 to Year 13.

The school primarily serves the communities of Green Bay and Titirangi.

[3] The founding principal of the school, Des Mann, challenged many of the standard educational practices of the 1970s.

He refused to allow students to be caned, did not enforce a school uniform, and did not stream pupils into academic and non-academic classes.

[4] In 1978, Green Bay High School opened Kākāriki Marae, the first marae built on high school grounds, after lobbying by Pat Heremaia, the head of Māori Language studies at Green Bay.