This decade also saw a renewed focus on research on girls' schools. In 1999, NCGS hired Goodman Research Group to collect and analyze data about the all-girls experience from the perspective of graduates of girls' schools as compared to female peers at coed schools. Over 4,000 graduates were surveyed, and the responses affirmed the benefits of girls' schools. The findings helped shape marketing and public relations materials in the early 2000s. In March 2009, Dr. Linda Sax at UCLA published her research, "Women Graduates of Single-Sex and Coeducational High Schools: Differences in their Characteristics and the Transition to College", which was commissioned by NCGS. The report documented the statistically significant edge girls' school graduates have over their coed peers in many areas including self-confidence, life goals, STEM interest, and career orientation.