Para 4.12.1 of the Education Guide in this regard is reproduced below for your guidance:
4.12.1 What is the meaning of 'education as a part of curriculum for obtaining a qualification recognized by law'?
It means that only such educational services are in the negative list as are related to delivery of education as 'a part' of the curriculum that has been prescribed for obtaining a qualification prescribed by law. It is important to understand that to be in the negative list the service should be delivered as part of curriculum. Conduct of degree courses by colleges, universities or institutions which lead grant of qualifications recognized by law would be covered. Training given by private coaching institutes would not be covered as such training does not lead to grant of a recognized qualification.
Hence, it appears that your case is not covered under the negative list and service tax is required to be paid.