Bendigo Senior Secondary College principal Dale Pearce said the school had experienced internet issues with Telstra, through service provider Broadband Solutions, since noon on Saturday.

Staff and students have only been able to send and receive emails internally in the past several days.

"We have staff who can't do their jobs properly," Mr Pearce said. "I dread the day when the internet is back up because I will have hundreds of unread emails."

Any emails from external sources hadn't come through, Mr Pearce said. The school's website has also been down for the past several days, which has resulted in restricted access to the parent and student portal.

The VCE exams began on October 30 and will run through to November 20.

Since the outage began on Saturday, there have been exams for Further Mathematics, Business Management, Mathematical Methods, and VET Hospitality.

"People say they want exams to go online but I think this is an example of why they shouldn't," Mr Pearce said.

Mr Pearce said he was unaware if Telstra had determined what the issue was or when it would be resolved.

A Telstra spokesperson said the company was not aware of a fault at this stage.

The disruptions at Bendigo Senior Secondary College come after Telstra outages disrupted a number of businesses in East Bendigo last month.