A student has been referred to Youth Aid after taking a toy pistol to Rangitikei College.
Marton Police were called to the school on Bredins Line at about 11.30am yesterday.
College principal Karene Biggs said staff and students had been made aware of the incident, and the offending student was being dealt with by police.
"A student was angry and had an inappropriate toy ... the police were called. It's been resolved," Mrs Biggs said.
"Students and staff are completely safe."