In recent years, the Pearson Foundation has paid to send state education commissioners to meet with their international counterparts in London, Helsinki, Singapore and, just last week, Rio de Janeiro.

The commissioners stay in expensive hotels, like the Mandarin Oriental in Singapore. They spend several days meeting with educators in these places. They also meet with top executives from the commercial side of Pearson, which is one of the biggest education companies in the world, selling standardized tests, packaged curriculums and Prentice Hall textbooks.

Pearson would not say which state commissioners have gone on the trips, but of the 10 whom I was able to identify, at least seven oversee state education departments that have substantial contracts with Pearson. For example, Illinois — whose superintendent, Christopher A. Koch, went to Helsinki in 2009 and to Rio de Janeiro — is currently paying Pearson $138 million to develop and administer its tests.

At least one commissioner, Michael P. Flanagan of Michigan, who went to Helsinki, decided not to participate in future trips once he realized who was underwriting them.