The Washington Post: A D.C.-area 18-year-old woman became part of a small group—18- to 19-year-old self-employed people—when she opened an accessories store. According to research, hers would be an outlier if it succeeds. “The failure rates [of small businesses] decline with the age of the person,” said Scott Shane, A. Malachi Mixon III Professor of Entrepreneurial Studies. “Starting a business out of high school is on average not a great strategy.”