Dean of Admissions Richard Vos resigned after acknowledging that he inflated the college entrance exam scores. His biography on the school's website has already been removed.
On Monday, the college president emailed students and staff notifying them of falsified scores, saying that the math and critical reading numbers that had been reported to national publications were inflated by 10 to 20 points.
Several publications, such as U.S. News & World Report, put out annual college ranking issues that many high school students use to determine what kind of college they are going to attend.
The latest ranking in U.S. News & World Report's list had Claremont McKenna as the ninth best liberal arts college in the nation.
"It's a little shocking, kind of surprising, that someone would do that," said student Leah Tobin.
The Claremont school's president said she was first warned about the scores earlier this month and began an investigation.
Claremont McKenna released the following statement:
"Claremont McKenna College has a deep and unwavering commitment to the integrity of its academic activities, including its academic reporting. We were saddened and disappointed to learn of this matter. The individual responsible for falsely reporting the SAT statistics has taken full responsibility for his misconduct and resigned his position from the College effective immediately. We have engaged outside legal counsel to review our admission-related data processes and are committed to strengthening them to ensure that this type of conduct will not occur in the future."
School officials said they have hired outside counsel to look at admissions data and suggest ways to strengthen the reporting process in the future.