In the early 2000s, the government reviewed the entire state school network in Wainuiomata under the direction of
Minister of Education (and Wainuiomata resident)
Trevor Mallard. At the time, the suburb of 16,000 people had two secondary schools, Wainuiomata College (opened 1963) and Parkway College (opened 1972). It was decided to rationalise the two secondary schools by merging them to form a new single secondary school, Wainuiomata High School on the Parkway site. The merger took effect in January 2002, ready for the 2002 school year. Parkway College, like most New Zealand state secondary schools built in the 1970s, was constructed the
"S68" standard plan. The S68 is characterised by single-story classroom blocks of concrete block construction, with low pitched roofs and internal open courtyards. When the two schools merged on the one site, the combined 800 students exceeded the capacity of the school's three S68 blocks (A, B and C blocks), requiring relocatable classrooms to be moved on site to deal with the extra students. Government funding saw a new five-classroom "social sciences" block (F block) open in early 2004 as a permanent solution. However, the school's roll soon increased to 940 students, ==Enrolment==