What are the extra benefits it provides for teachers, that the other policies specifically exclude?
To make an informed decision, to see if it is worth it, you will need to compare the policies, and see if you get extra benefit from March. eg do some of the other policies specifically exclude prolonged time off work for 'stress' for example?
Also, re you sure that March provide income protection? I have never heard of this company for income Protection in Ireland: are you sure that they don't just arrange Income protection through Friends First or one of the other companies? (Only 3 companies have been providing this service I thought, Friends First being the most comprehensive by far). I stand open to correction to this however.
You need to investigate all of this before you can decide
Nicola