There is confusion around how Auckland University can return to campus.

The university's keeping classes online until October 2, after reneging on its plan to operate classes up-to 300 people on campus from Monday.

Tertiary Education Union national secretary Sandra Grey says official information is conflicting.

She told Mike Hosking details for the tertiary sector needed to be clear from the start - and they've asked officials for clarification.

Grey says they're asking if all students should be wearing masks because physical distancing will be hard.

Auckland University Students' Association is also advocating for compulsory mask-wearing, as well as staying online for the rest of the semester.

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