"… Starting in the 2019-2020 school year, students will be required to sign up by Nov. 15 in the year before they take the spring exam if they don’t want to incur a late fee, the College Board said. Previously, students signed up for AP tests not long before they took the exam, but Goldberg said many schools have been independently moving to fall registration. The College Board is following suit - and adding a late fee.
The cost of each test will remain the same at $94, but a late fee of $40 will be charged if registration occurs between Nov. 16 and March 13. Students will be charged an additional $40 if they do not take an exam after signing up. The board is eliminating the $40 fee schools have paid for makeup tests because of conflicts with athletic or academic events." …
https://www.sfgate.com/news/article/The-College-Board-is-changing-sign-up-rules-for-13598597.php