Comparable store sales in the Retail segment decreased 5.1% for fiscal year 2019, driven primarily by enrollment declines, especially at community colleges, and the overall decline in textbook average selling prices.
https://www.businesswire.com/news/home/20190625005339/en/Barnes-Noble-Education-Reports-Fourth-Quarter-Fiscal
Here's another potential hit:
"Barnes and Noble's education division supplies the online courseware for the AFSCME program, according to the state audit. Student Resource Center gets a monthly reimbursement for its operating expenses, after the college has recovered its costs. Net operating income is divided equally between the college and the OPM, the audit said."
https://www.insidehighered.com/digital-learning/article/2019/06/26/ohio-community-college-raises-questions-enrolling-large-numbers