The New York Times
"Nearly 90 percent of high school graduates say they’re not interested in a career or a college major involving science, technology, engineering or math, known collectively as STEM, according to a survey of more than a million students who take the ACT test."
"More than half of the 6.7 million students studying physical sciences — chemistry, physics and earth science — are learning from teachers who did not major in those subjects. Only 64 percent of those teachers are certified. The number is better for math teachers, as 78 percent are certified, but that still leaves three million math students being taught by uncertified teachers."