Hi

Yes. For eg the eligibility criteria for PGT maths teacher post in kendriya vidyalaya sangathan reads

" Two year integrated postgraduate MSc course of regional college of education of NCERT in the subject concerned" or

Master's degree from a recognized university with atleast 50% marks in aggregate in mathematics/applied mathematics

BEd or a equivalent degree from a recognized university

Now an additional degree has been made essential that is to qualify the exam of CTET ( Central Teacher Eligibility Test) .This certificate was initially valid only for a period of 7 years but recently the NCTE( National Council for Teacher Education) has extended its validity for lifetime, it means you can keep applying as many times in government schools ( till the prescribed age limit).

Desirable qualifications : knowledge of computer applications.

Hope this answers your query!