My land for village School

Hi, One Tamil nadu govt school In my village, thats have upto 8th standard class only, village peoples plan to make that school as SECONDARY SCHOOL that is upto 10th standard class. Village people asking my land but some gang plan to take my 2acres fully,I have doubt that they may plan to take my full land and give small cents to govt and take remaining land to them. How to I handle it? My questions are 1. They must have authorized certificate for get my land( any govt order) 2. Wat will be and will not be in the agreement? 3. To whom I want to transfer my land like a persons or District educational officer? 4. If I give land to govt directly, govt give amount for that? 5. How to know howmuch cent govt need for build school. 6. Whom I want to consult? I like to give land for school, but I not like to be fool in it. Thanks in advance..