We'd love to help, but this is beyond the scope of these mutual-help consumer forums. We are other end users like you, not Apple or taxing authorities. We cannot give binding or official answers.
Apple will neither see nor respond to your question here.
There is some tax information in this shopping help document:
Payment, Financing, Refunds and VAT - Shopping Help - Apple
but, again, that is the US policy site.
You need to ask Apple but the nearest Apple sub-office appears to be in Turkey, although this one in Ireland usually pops up for most countries around in your area:

The German "Contact Apple" page shows this email address for the Holyhill location:
contactus.de@euro.apple.com
The US policy for educational purchases is that the buyer must be enrolled in or employed by a US institution and have documentation to that effect. So you may find any Apple edu program to be country-specific.