Junior classes means preparation for communion - a handful outside of everything else.
Secretary in our school inputs all info into esinet, does the photocopying, types out the policies, books buses, orders materials etc. etc.
A secretary is a great resource but must have his/her duties defined and should be reviewed regularly.
Delegation and proportion is the key. Delegate so that classwork can be number one.
A good exercise is to make lists - immediate, to be sorted in the medium term and long term. A page divided into three columns and bullet point within the lists.
You seem to have a capable head on you ... offer to help prioritise the list.
NUMBER ONE is, again, get classroom work organised. Each day of learning lost is a day never to be found again.
Is your friend comfortable in the junior end? The senior side are more independent and might be a better option to be considered (for a teaching principal) for next September.
Is there an SNA in the classroom/school? If there is, they can be invaluable.
Coming back to your original post ... I don't think moving would sort their stress ... they just need to get organised.
The INTO and IPPN websites have great resources for download.
The DES site dealing with school planning has great stuff on it for helping the teacher to sort his/her curriculum planning. Re. the secretary - tell your friend to look at the IPPN resources section - there's a sample contract for secretaries there.