The commission said in its final report on Tuesday that the school lacked any written criteria for hiring staff or managing students' health problems.
In addition, the commission found that the Vienna State Opera's ballet director only visits the school a few times a year even though managing it is one of his tasks.
"We received reports that advice was given [to students] to start smoking so that they would be less hungry," commission chairwoman Susanne Reindl-Krauskopf told a press conference.
Students were also addressed by their first name and clothing size in order to highlight their weight, and there were reports of physical abuse during training.
The Vienna State Opera has started work to improve the situation, but the commission criticized that changes seem designed to improve the public image rather than student's well-being.
When asked whether she would advise parents to enrol their children, legal scholar Reindl-Krauskopf said Vienna-based parents could make up for the academy's lacking medical and psychological support, while parents of foreign students could not.
"I would advise them to reconsider," she said about foreign parents.
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