LEHI, Utah — It was the last class before Thanksgiving break, and high school math teacher Sarah Gale was dishing out more than her usual lessons on data science. “I can smell it,” said one student, ...

Students in Kristen Gonsoir’s classroom at Groton Area High School in Groton, S.D., spend a lot of time solving equations together. Early this school year, they passed almost an entire period working ...