In truth, the University Store does not set the deadline for textbook adoption forms. The date is set by the provost office in an effort to keep the university in compliance with federal law that requires textbook information to be available to students at the time of their enrollment.
It also takes time to process the large volume of textbook adoption forms for every course Oklahoma State offers. There are all kinds of variables that may need to be pinned down in processing each book adoption request, like: resolving problems with requests and communicating back to faculty; preparing lists for used book wholesalers; seeking out availability and best prices among multiple distributors; ascertaining when new editions will be available; finding out whether textbooks bundled with other components can be obtained separately; and reviewing enrollment figures and sales histories to help determine how many copies to buy. Additionally, because thousands of college bookstores order books within the same period, wholesalers and publishers need time to process and ship the flood of orders.
We also need the adoption forms so we know which used books to buy back from our students.