Where a U.S. District Court applied an incorrect “hellish” standard to the plaintiff’s hostile work environment claim, the court erred in its assessment and the plaintiff was entitled to present his case at trial.The 7th U.S. Circuit Court of Appeals affirmed in part and reversed in part a decision by U.S. District Judge Robert M. Dow Jr.Fred Gates, an African-American, worked as a building engineer for the Chicago Board of Education beginning in 2004.In 2010, Gates was hired to fill the sole engineer …