(2) The nature of your appointment i.e., fixed term appointment or regular appointment does not matter for payment of gratuity provided there is no break in your service under the same employer.
(3) The Trust is liable to pay gratuity of course thro the School run by it.
From India, Salem
There is no guideline regarding kind of employment. Since your service is continuous you will receive gratuity. Your service starts counting from 2010. The one who employed you is responsible for payment of gratuity i.e.,your principal.
From India, Kolkata