A Melbourne cafe owner whose business was inundated with hundreds of negative online reviews following the VCE English exam is taking legal action against the state's curriculum authority.

Tara Conron, who owns the Calmer Cafe in Aberfeldie, is still assessing the fallout from a blunder in Wednesday's exam, which asked students to analyse a scathing review of a cafe that shared an almost identical name to hers.

"I don't know how much damage this is going to do until further down the track when people who don't know it's a joke read the reviews," she said.

Calmer Cafe in Aberfeldie, in Melbourne's north west, bears a similar name to a cafe in the Year 12 English exam. Credit:Justin McManus

The negative reviews started to flood in after the exam finished on Wednesday afternoon.