Watch: 'The future is looking fairly grim,' says Auckland principal, as teachers' strike underway across New Zealand

Schools are closed as thousands of primary school teachers and principals across the country go on a full-day strike today over pay negotiations.

New Windsor School principal Glenn Bermingham told 1 NEWS on the picket line in Auckland this morning that the future "looks grim" for the primary education sector with lacking resources, low staffing numbers, retaining young graduates and increasing wages in line with the rising cost of living all major issues.

'We want to fix this' - teachers union says today's nationwide strike is a 'symptom of under-funding'

'We've reached a crisis point' – teachers ready to 'stand up and be heard' as strike nears

A day in the life of a teacher: It doesn’t stop when the bells rings

"We've got a bit of a perfect storm at the moment, and this is critical for Jacinda and those people in Wellington to sit up and actually say, 'Yep, we need to put some resource in here, we need to be listening.'"

The group were among thousands of teachers to strike nationwide. Source: 1 NEWS

An Auckland teacher protesting on the frontline said teacher burnout and stress is common and "the children deserve more".

New Windsor School’s Glenn Bermingham spoke with 1 NEWS will out on picket line. Source: 1 NEWS