Education - Teacher headcount in State and State Integrated Schools, by Māori Medium status 2004–2021

All teachers are included - both regular (permanent and fixed term) and day relief teachers.
Teachers can work in more than one role across a year. Here teachers are counted in their main role, which is the role that they worked the most hours in during the year.

The Māori Medium status for a day relief teacher is based on the school they spent the most time doing relief work at.

Teacher: Employee on a teaching agreement and received at least one ‘normal’ salary payment for the year. Teachers who work in multiple roles are reported against the role in which they worked the most hours during the year.
Main teacher role: The main teacher role is defined as the role where the employee worked the most full-time teacher equivalents (FTTEs) during the entire year as a teacher.

Māori Medium Status: The status of the school where the teacher works their main teaching role for the year:
- Māori Medium: all students are taught the curriculum in Māori for at least 51 percent of the time
- English Medium: no students are taught the curriculum in Māori for at least 51 percent of the time
- Māori and English Medium: some students are taught the curriculum in Māori for at least 51 percent of the time.

https://www.educationcounts.govt.nz/data-services/data-collections/national/schooling-workforce

All types of teachers are included - fixed term, permanent and day relief staff.

Teachers at Te Kura who are employed on an Early Childhood teaching agreement and teachers who work for only a small fraction of the year (that is, less than one day) are excluded.
Some teachers who have resigned towards the end of the year will receive their last payment just before the start of term 1. These teachers would therefore be inappropriately included in the next year’s data and are excluded.

In 2018, the Ministry of Education developed a new data series for the schooling workforce. This is based on a calendar year, rather than a point in time (single pay run) as occurs with the old measure (which was based on the first pay run in April) The new data series therefore includes a greater number of teachers.
The new data series covers a twelve month period with the start of the year being the first pay period that is fully within January.
The new schooling workforce data series includes composite schools in the secondary sector.

At URL provided, select 'Time Series: All Teachers Headcount 2004-2021' from under the 'Teacher Headcount: Time Series Data' heading.

This data series presents demographic information on teachers in state and state integrated schools and covers a twelve month period with the start of the year being the first pay period that is fully within January.

The size of the teaching workforce can be measured either as a headcount or in terms of full-time teacher equivalents (FTTE). FTTE data are only available from 2014 onwards - data from previous years are not comparable due to changes in definitions.