Film distributors often have specific licensing terms for academic scenarios. Examples include:
Public Statement of Library Copyright Specialists: Fair Use & Emergency Remote Teaching & Research
Presented in support of college and university instructional needs during the COVID-19 crisis.
Nearly everything you need to know about fair use, permissions, the public domain, and copyright law, courtesy of the folks at Stanford University Libraries.
Center for Media and Social Impact Codes of Best Practices
Code of Best Practice in Fair Use for Academic and Research Libraries
Code of Best Practice in Fair Use for Media Literacy Education
Documentary Filmmakers' Statement of Best Practices in Fair Use