Being punched in the stomach several times by an angry child, having to remove a parent who is exhibiting irrational behaviour, and restraining an out of control student.

These are just some accounts of what two Northland principals have faced as part of their jobs as school leaders - and they're not alone.

Education union NZEI Te Riu Roa today released its annual health and wellbeing survey of primary school leaders.

The survey showed in two years threats of violence towards school leaders had increased by 57 per cent. A total of 28 per cent of survey respondents reported threats