Schools stood down pupils 25,167 times in 2022 - the highest number in more than 20 years of records, Education Ministry figures show.
The figure was equivalent to almost 3.3 stand-downs for every 100 students, the highest rate on record by a narrow margin.
Stand-downs are the formal removal of a pupil from a school for no more than five days and the figures show 24 percent of the 18,681 young people stood down last year were stood down more than once.
Although stand-downs increased in 2022, the rates of more serious punishments - suspensions and exclusions/expulsions - remained similar to or lower than past years.
Stand-down rates were highest in West Coast at 6.7 per 100 pupils, followed by Southland with five stand downs per 100, and Waikato with 4.6.
Smoking, vaping or alcohol was behind 16 percent of stand-downs in 2022, the highest figure on record, and up from 8 percent in 2019.
Physical assault on students was the single highest cause of a stand-down, accounting for 29 percent of cases in 2022 - slightly lower than previous years.
The figures show the rate of stand-down for assaults on other students was close to one for every 100 students, almost the same as in 2019 before the pandemic began.
Stand-down rates were highest among 13 and 14-year-olds (about 7.5 per 100), boys (4.3 per 100), Māori pupils (five per 100), and students from schools in poorer communities (about 5 per 100 in primary schools and nearly 6 in secondary schools).
An Education Ministry report accompanying the figures said physical assaults and smoking or vaping had increased.
"The reason with the highest increase for stand downs was physical assaults on other students. These rose from 5917 cases in 2021 to 7409 cases in 2022 and accounted for 36 percent (1492 out of 4162) of the increase in stand-down cases," the report said.
"Smoking/vaping had the second highest increase and accounted for 20 percent (853 out of 4162) of the increase in stand down cases between 2021 and 2022."
The ministry's report said rates increased from 2016 to 2019, and again from 2020 to 2022, but there was no corresponding increase in more serious disciplinary responses.
In 2022, there were 2728 suspension cases affecting 2485 students, the report said.
Following the suspension process, schools and kura excluded 852 students and expelled 98, the report said.
Flow-on from lockdowns
Secondary Principals' Council chair Kate Gainsford said Covid-19 pandemic lockdowns have been a driver of the record numbers.
She told Morning Report not all students had safe or positive lockdown experiences, with some picking up bad habits to cope with stress from their parents.
"That relates to some of the figures you'll see around vaping and smoking and drinking and even violence and, of course, some families lost access for their young people and, for themselves, to some pretty important support networks and professional services."
Stand-downs from school could be effective as "a breathing space" for a plan to be pulled together to help the student and many went on to complete their schooling.
Many of the studetns, including those who were stood down repeatedly, needed to have timely access to support services.
Gainsford said there have been significant delays in getting the support workforce back to full strength for students and their families.
RNZ
