Home Current Mark Riddell, the test-taker whiz in cheating case, expected to plead guilty...World NewsCurrentNewsMark Riddell, the test-taker whiz in cheating case, expected to plead guilty in court FridayApril 11, 201965FacebookTwitterPinterestWhatsApp Mark Riddell, the man accused of taking tests for students in an elaborate college admissions scheme, is scheduled to appear Friday in federal court.