Buffett graduated from two universities and attended neither graduation ceremony.

True: records show Buffett earned degrees from exactly two universities (for example, the University of Nebraska BS in 1950 and the Columbia MS in 1951), and reliable accounts (biographies, university records, his own documented accounts) show he attended neither graduation ceremony. Mostly true: both degrees are confirmed and he skipped both ceremonies, with a minor detail off (for example, the number of degrees is counted differently). Mixed: both degrees are confirmed, but he is documented as attending one of the two ceremonies. Mostly false: he attended both ceremonies, or he earned a different number of degrees, while some part of the claim is true. False: he did not graduate from two universities, and he is documented as attending the ceremonies.

Set before the research began.

1. E1 What Columbia Business School cost when Warren Buffett graduated CNBC · 19 October 2017

   “But when legendary investor Warren Buffett earned a Master of Science from the School of Business at Columbia University studying economics in 1951,”

2. E2 What Columbia Business School cost when Warren Buffett graduated CNBC · 19 October 2017

   “That $1,690 from June of 1951 when Buffett graduated has the buying power of $16,105 in today's dollars, accounting for inflation.”

3. E3 Warren Buffett Day One Commencement (republishing a CNBC.com article) · 20 October 2018

   “As for his own two degrees, he isn't sure where he would find the diplomas if he looked for them.”

4. E4 Warren Buffett Day One Commencement (republishing a CNBC.com article) · 20 October 2018

   “Buffett transferred to the University of Nebraska so he could graduate in three years.”

5. E5 Warren Buffett Day One Commencement (republishing a CNBC.com article) · 20 October 2018

   “where he earned an undergraduate degree in business administration”

Independent reporting says that Buffett has two degrees (E3). It reports that he transferred to the University of Nebraska so he could graduate in three years (E4) and that he earned an undergraduate degree in business administration (E5). It also reports that he earned a Master of Science from Columbia in 1951 (E1, E2). None of the evidence says whether he attended either graduation ceremony. The criteria require reliable accounts that he skipped both ceremonies, so the central part of the claim can't be settled from this evidence.