Although the headline ranking figures show changes in the data year to year, the pattern of clustering among the schools is equally significant. Some 170 points separate the top programme, Insead, from the school ranked number 100. The top 16 participants, down to Yale School of Management, form the top group of MBA providers. The second group, headed by Esade Business School, spans schools ranked 16 to 42. Differences between schools are relatively small within this group. The 40 Schools within the third group headed by University of North Carolina: Kenan-Flagler are similarly close together. The remaining 18 schools headed by University of Illinois at Urbana-Champaign make up the fourth group.
