Trying to find best product for us

Hello I am trying to get avast installed on all of the windows devices in my school district. We currently have avast for business and i have installed avast on a dozen computers. I am trying to find out the price and best way to go about getting avast installed on all of the windows devices. Do i need to upgrade to something else of avasts to deploy to the district? if so how much does that cost for education? thank you for your help.

some info here

Secure Students, Faculty, and Staff for FREE https://www.avast.com/education

avast for business FREE https://www.avast.com/avast-for-business

you may contact avast for info https://support.avast.com/support/home

if you use removable drives, USB stick then this is a must have install and forget tool, and it is FREE MCShield http://www.mcshield.net