Software could be one option, outsourcing another option.

I guess schools don't understand so well about process analysis to see what could be allocated on a per task basis. They could even offer work at low pay rates to mothers in their community who are looking for experience to bridge the move back to work.

Software has streamlined generic and common tasks in other industries and it would be unusual if the forces of commerce didn't bring such advancements to Education. Head masters and mistesses should be more savvy to the options open to them too in the wider context - Accounting Software for automating wages processing, producing MI speedily and with low human involement, automoating Social Media postings, HR maintenance functions such as holiday booking and sick form processing pushed down to the individual as goes on in business. Packages such as SAP have always had this functionality and then there's the new wave such as this..

https://techcrunch.com/2017/01/05/namely-raises-50m-to-take-on-the-biggies-in-hr/

Educational system reform and privatization of educational institutions could contribute to the decrease in bureaucratic tasks that teachers are involved in along with the automatization. If an academic institution is a part of a huge overcrowded public sector industry with the long history of bureaucracy, wage arrears and other systemic problems, teachers at such institutions would be involved in a large number of bureaucratic tasks that go beyond their direct responsibilities and related to administrative and financial matters. In addition should there be laws against making public workers redundant, bureaucratic tasks could serve very convenient area with the help of which teachers who do not have any classes during a semester could be kept busy. Such type of inefficient and malfunctioning system could be supported by all employees of academic institutions with the help of professional unions. If there is double-digit unemployment and no alternative employment prospects for teachers outside of the public sector, the situation will not likely to change in the medium-term.

I think there should be a different person, a secretary, that would enable the teacher to be the best at what they do, which is teaching, instead of undergoing heavy loads of paperwork and having less and less time to spend for preparing and teaching their students,

If there were an extra person, he or she could support the teacher or even better, several teachers, and work in a united front to help the teacher and more importantly, the students to receive the best quality of knowledge they can, whether this is in public or private schools, colleges or universities, etc.