St. Mark’s School of Texas seeks a dynamic and innovative educator to teach science and serve as director of the Arthur Douglas Greenhouse.  The holder of this position will teach four upper and/or middle school classes in the Science Department, with the additional teaching assignments to be based on candidate experience and departmental needs.  Candidates should have a bachelor’s degree or higher in a relevant scientific field and have experience teaching at the high school level.  The ideal candidate is an experienced naturalist and passionate teacher who is eager to share lessons from the natural world with young people.    The Arthur Douglas Greenhouse, located in the state-of-the-art Winn Science Center that opened in 2019, is a 3