Find out the No. 1 reason why students withdraw from UST St. Thomas Newsroom November 18, 2002 "The 39 Percent Factor" is the title of the next Multicultural Student Services Retention brown bag series talk. It will be held from noon to 1 p.m. Wednesday, Nov. 20, in Room 160, Murray-Herrick Campus Center.This series for faculty and staff focuses on undergraduate retention at St. Thomas. The series began with a session examining UST’s demographic composition. It will continue with sessions that focus on retention issues of specific populations, as well as other related topics. The sessions will include data presentation and group dialogue.Bring your lunch; beverages will be provided.