Columbia College is not going to take part within the subsequent U.S. Information & World Report rankings of faculties throughout the nation, after a Columbia math professor questioned the accuracy of the info that secured its No. 2 spot within the influential rankings, the college introduced on Thursday night time.

The deadline to submit information for the rankings is Friday, and a college spokesman mentioned officers wanted extra time to investigate the info and handle the criticisms raised by the professor, Michael Thaddeus.

In a 21-page stinging critique Dr. Thaddeus posted on his web site in February, he not solely challenged the info behind the ranking however added gasoline to the talk over whether or not school rankings — utilized by thousands and thousands of potential school college students and their mother and father — are invaluable and even correct.

“Columbia leaders take these questions critically, and we instantly launched into a overview of our information assortment and submissions course of,” Columbia’s provost, Mary C. Boyce, mentioned within the announcement.

On the time, Columbia stood by its information, however Dr. Boyce mentioned the college was “now carefully reviewing our processes in gentle of the questions raised.”

“The continuing overview is a matter of integrity,” she continued. “We are going to take no shortcuts in getting it proper.”

A spokesman for Columbia, Ben Chang, mentioned he didn’t wish to speculate about when Columbia would once more take part within the rankings.

For an Ivy League college like Columbia to withdraw from the rankings, even quickly, is a blow to their status and will spur different universities to rethink their participation as effectively. Many school presidents complain that the rankings pressure them to emphasise statistics that oversimplify what it takes to discover a good match between a scholar and a faculty.

Dr. Thaddeus mentioned on Thursday night time that the transfer raised a number of questions that Columbia had not but answered.

“Is the college expressing its disapproval of the U.S. Information rankings themselves?” he wrote in an e-mail. “Will it withdraw in future years as effectively? Why can’t the work be accomplished? What was it in regards to the questions I raised that, apparently, derailed the method?”

The college had not made “any substantive responses to the concrete points I introduced up,” he added.

In Dr. Thaddeus’s critique, he cited proof he gathered that prompt Columbia had made its undergraduate courses look smaller, its instruction spending look better and its professors look extra extremely educated.

The following version of the rankings is scheduled to return out in September, officers mentioned. To assist potential college students navigate with out it, Dr. Boyce mentioned Columbia deliberate within the fall to publish a Frequent Knowledge Set, a loosely standardized set of statistics utilized by larger instructional establishments. She mentioned it might embrace a lot of the identical info that’s included within the U.S. Information profiles.

Dr. Thaddeus mentioned he understood that Columbia had ready such information units up to now for its personal inner use however didn’t make them public.

“The purpose is that they’ve paperwork that might make clear their previous submissions to U.S. Information — and would possibly even reveal whether or not their misrepresentations have been intentional or unintentional — however they refuse to make them public, even after an amazing majority of the college who voted requested them to take action,” he mentioned.

Mr. Chang, the spokesman, declined to touch upon Dr. Thaddeus’s remarks in regards to the Frequent Knowledge Set however famous Columbia’s pledge to publish a knowledge set this fall. “The college has lengthy performed what it believed to be a radical course of,” he mentioned. “Our aim is most accuracy and transparency.”

Critics have mentioned that the U.S. Information method tends to reward colleges primarily based on wealth and status.

In his evaluation, Dr. Thaddeus, who makes a speciality of algebraic geometry, discovered that key supporting information submitted by Columbia was “inaccurate, doubtful or extremely deceptive.”

This yr, Columbia rose one spot within the rankings to No. 2; the college was surpassed solely by Princeton and tied with Harvard and M.I.T.

Dr. Thaddeus famous that Columbia was ranked 18th in 1988, an increase that he prompt was outstanding. “Why have Columbia’s fortunes improved so dramatically?” he requested in his evaluation.

Columbia just isn’t the primary college to have its rankings information questioned.

This yr the College of Southern California pulled its schooling college out of the U.S. Information rankings due to inaccuracies in information that went again 5 years. And a former dean of Temple College’s enterprise college was discovered responsible final yr of utilizing fraudulent information between 2014 and 2018 to enhance the college’s nationwide rankings and improve income. The college’s on-line M.B.A. program was ranked finest within the nation by U.S. Information & World Report within the years that he falsified information.

Over time, different colleges like Iona Faculty, Claremont McKenna Faculty and Emory College have been discovered to have falsified or manipulated information.