"Funding is huge - it's barely kept pace with inflation. There are more students with high and complex needs than ever before, and schools are struggling to keep up," Mr Hipkins said.
He said there was no quick-fix for New Zealand's education system.
"People often want us to find the silver bullet, but there isn't one.
"However, Labour will increase funding for professional development for teachers. We also need to change the way we fund teacher aides, and train a lot more specialist teachers."
Mr Hipkins said he believed schools throughout the country faced similar issues.
"Obviously there are regional variations, and socio-economic conditions vary from place to place, but the issues are the same."