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"Our Kiwi kids don't want to be in the same class as your disgusting virus spreaders!" the email says.
The message - which has caused upset and disgust in the community - was from Protect Rolleston and used proton mail.
A Chinese student who saw the email posted to the WeChat messageboard contacted the Herald, appalled at the attitude of the anonymous emailer.
"As the virus has become a worldwide concern, so many families [have] lost their loved ones due to this virus. Asians in New Zealand are aware of the current circumstances and have taken steps in self-isolation," she said.
"There is zero tolerance for any kid to be treated as a virus spreader just because they're Asian. They haven't seen or had the virus - how could they have the opportunity to become a virus spreader? It's totally nonsense.
"I'm really shocked, I never though that Asian racism to this level could be seen in New Zealand."
They say unlawful, abusive or threatening behaviour targeting people in relation to the coronavirus will not be tolerated - and racism and xenophobia is taken seriously.
Parents are also concerned at how the sender had access to their email addresses.