Can a teacher in a pvt school resign without serving 3 months notice period

Can a teacher in a pvt school resign without serving 3 months notice period ??? Being a teacher in a private school, I want to leave at the end of an academic session without serving the notice period. As per agreement I had to serve three months of notice period. I work in a private school named hebron primary school ahmedabad. The school had compelled me to sign a bond if 2 years which I had completed and also deposited 1 month salary as securitydeposit. In the agreement there is a point written that - If I wish to discontinue before the completion of the said term, I authorize the school to claim my security deposits. This is the amount spent on newspaper/ online advertisements for teachers' recruitment who leave between sessions for during tenure here. The school authority force me to serve the three months Even they are not issuing me the clearance certificate as well as the experience certificate. They are saying that I have to serve the notice period in any condition. They are mentally as well as verbally torturing me so much that I cant even sleep at night thinking about all these nuisance. They are even saying that they will take a legal action against me for not serving the three months notice period even though they had one month advance salary They don't have any other Benefits as I served there 3years 8 months. As institution giving so much pain that they are behaving so unprofessionally with me. Isn't this injustice to me?