Find relevant contact from web domain of the school (I need teachers, principals)

This time I have a DB of school domains (their email domain) and I need to find relevant contacts in these schools. I don't need all teachers and employees. I need specifically:
- IT/Informatics/computer teachers (there are more names for this position - find all of them)
- design/graphic/artist teachers (there are more names for this position - find all of them)
- school principal
- IT/Tech/technician/computer employees (there are more names for this position - find all of them)

I need parameters in DB:
- name
- email (ideally not generic like teacher@ but better like JohnWick@)
- position
- school name
- School Address(or just city/state)