A 45-year-old man has been charged after he allegedly swerved a taxi into a tractor-trailer on a highway while he was sitting in the front passenger seat, Ontario Provincial Police said.

“The company’s rapid descent is stunning and sobering.” Byju’s and its namesake founder, Byju Raveendran, didn’t respond to requests for comment on the company and the allegations raised by creditors.

On Wall Street, it was an easy sell: The most valuable startup in India’s history, a tech company with Silicon Valley cachet, a charismatic founder and visions of dominating the online-education ...