An alleyway brawl that left a Melbourne schoolboy dead, has raised questions about who’s responsible for keeping international students safe in Australia.

Year 12 student Jeremy Hu, was repeatedly kicked and stomped on, and he later died of his injuries.

None of his friends called an ambulance that night, and instead of taking him to the hospital, they checked him into a hotel.

Reporter Jane Lee takes a hard look at the $30 billion international education industry and follows the murder trial in the aftermath of Jeremy Hu's death.

A warning you'll hear some strong language and descriptions of violence.

This is a repeat of a program that aired in March 2018.