Here is a 10-point guide to the controversy:
The scam erupted in 2013- with reports that bribes were being paid by those seeking admission to medical colleges. In exchange for kickbacks, politicians, bureaucrats and others were allowing imposters to take the admission exam. Similar "proxy candidates" were used for recruitment exams for jobs as government teachers and doctors.
Vyapam is acronym for Vyavsayik Pariksha Mandal.
Since the investigation into the scam began, 35 people have died. They include witnesses, accused, those assisting the investigation and a journalist who was covering the scam.
Since August 2013, the investigation is being handled by a Special Task Force of the Madhya Pradesh police.
In 2014, the Madhya Pradesh High Court rejected demands for a CBI inquiry from the Congress and others.
Instead, it appointed a committee with three members headed by a former judge - to monitor the police inquiry.
This committee is intended to serve as a watchdog for the inquiry, the High Court has said.
There are 2,500 accused in the scam; 1,900 are in prison. About 500 are missing, the police has told the court.
55 cases have been filed so far.
The opposition Congress says that 77 lakh candidates have paid bribes as part of the scam.
Leaders React To NDTV Impact Story Which Led To Probe In Man's Dissappreance In Madhya Pradesh, Insects In Wheat Bags, Lakhs Of Tonnes Allowed To Rot Fruit Seller Runs Vehicle Over Forest Guard, Kills Him; Drags Body In Madhya Pradesh: Cops Nurse Raped, Killed On Way Home, Body Found 9 Days Later In UP This US City Has Been Declared America's Least Desirable, Survey Finds "Don't Expect Anything From Me": Kolkata Hospital's New Principal Loses Cool Ukraine, Russia Both Claim Advances In Kursk Region Gaza Ceasefire Talks Underway In Qatar As Deaths Top 40,000 Trump To Hold Press Conference, His Campaign Adds Senior Advisers Track Latest News Live on NDTV.com and get news updates from India and around the world.