the graduated students suicidal

Between 1980 and 1998, there were eight graduate student suicides at Harvard, four of these in the Harvard Chemistry Department, three of whom had Professor Corey as an adviser (one had been in the Corey Lab less than two weeks).[4][5] The 1987 and 1997 Corey Lab suicides "by all indications ... had nothing to do with the students' work in chemistry"[6] These suicides should be evaluated within the context of approximately 20 Harvard student suicides between 1970 and 1990[7] and at least 15 Harvard undergraduate suicides between 1995 and 2005.[8] These Harvard graduate student suicides were considered by some to be "not an unusual rate for a university" and "not an isolated incident by any stretch" serving to illustrate the "difficulties of high-pressure graduate school life for some, especially at a competitive university"[6] As recently as 2012, The Harvard Crimson concluded that "even the most conservative calculation" yields a current Harvard student suicide rate "nearly twice the national average for college students".[9