Remarkables Primary School pupils and staff with possible measles symptoms, and those who have not been vaccinated twice, have been told to stay away until next Tuesday.
The total number of confirmed measles cases in Queenstown remains 15, and the Southern District Health Board said it was aiming to contain the resort town's outbreak and stop it spreading to other areas.
There are more than 1000 confirmed cases of the highly contagious disease - most of them in Auckland, where the total was 944 yesterday.
After two Remarkables pupils were confirmed as having the virus last week, the school is following "strong recommendations'' from Southern DHB medical officer of health Susan Jack, principal Debbie Dickson says.
Dr Jack's letter, emailed to the school late on Sunday night, said any pupils and staff members who could not show proof of having received two measles vaccines could not return to the school until September 17.
Mrs Dickson said "a number'' of pupils and staff were affected by the requirements, but she could not say how many.
"Due to confidentially I'm governed by the Southern District Health Board not to actually state that number.
"They're verifying the information that we're providing, and it's changing because people are getting checked, so at this time it's just too early [to say].''
Staff spent most of yesterday checking the school's immunisation records, she said.
The school had been "ahead of the game'' in that process because the Southern DHB had asked schools in the area to begin checking their records last week.
- A drop-in vaccination clinic will operate in Queenstown today at Lakes District Hospital, 20 Douglas St, Frankton, from 3.30pm to 8pm.
