Mindfulness, while common in hospitals, corporations, professional sports and even prisons, is relatively new in the education of squirming children. But a small but growing number of schools in places like Oakland and Lancaster, Pa., are slowly embracing the concept — as they did yoga five years ago — and institutions, like the psychology department at Stanford University and the Mindfulness Awareness Research Center at the University of California, Los Angeles, are trying to measure the effects.

During a five-week pilot program at Piedmont Avenue Elementary, Miss Megan, the “mindful” coach, visited every classroom twice a week, leading 15 minute sessions on how to have “gentle breaths and still bodies.” The sound of the Tibetan bowl reverberated at the start and finish of each lesson.

The techniques, among them focused breathing and concentrating on a single object, are loosely adapted from the work of Jon Kabat-Zinn, the molecular biologist who pioneered the secular use of mindfulness at the University of Massachusetts in 1979 to help medical patients cope with chronic pain, anxiety and depression. Susan Kaiser Greenland, the founder of the InnerKids Foundation, which trains schoolchildren and teachers in the Los Angeles area, calls mindfulness “the new ABC’s — learning and leading a balanced life.”

At Stanford, the psychology department is assessing the feasibility of teaching mindfulness to families. “Parents and teachers tell kids 100 times a day to pay attention,” said Philippe R. Goldin, a researcher. “But we never teach them how.”