I'm wondering how I can utilize Apple School Manager to purchase Filmic Pro for my video class students at Williams College. I don't know how to use Apple School Manager.

The problem is that these forums are not Apple but rather end users. Forums were set up for helping with specific tech issues and we are totally unqualified to talk about Apple programs that are beyond the scope of product help.

The only thing I can find on Apple.com is a support phone number for education customers. I don't know if that is for purchasing help or something else, but it is in the "United States" section of this Apple contacts page:

Contact Apple for support and service - Apple Support

Worth a try. At least you may be able to get the contact information you need.

I agree with Deggie that you should go through your local administrator.

Are you authorized to make purchases? I would talk to whoever is administering your system at your college.