¦ Correction: A story in Saturday’s Metro section about a new dean at Harvard’s T.H. Chan School of Public Health incorrectly described the singularity of Michelle Williams’s appointment. She is the first black person to lead a graduate school at Harvard.

¦ Correction: Because of a reporting error, a story on Boston Ballet’s 2016-17 season that appeared on the Thursday Names page mischaracterized the company’s history with Balanchine’s “Donizetti Variations.’’ Boston Ballet has performed the work a few times since the company’s professional debut in 1964.