To pursue a career as a PGT (Post Graduate Teacher) in Computer Science in a CBSE school , your eligibility and required qualifications depend on the subject of your M.Sc. degree . Below is a detailed guide:

If You Have a M.Sc. in Computer Science:

• You do not require any additional qualifications in computer science.
• The only requirement is to complete a B.Ed. degree with Computer Science as your subject of specialization.
• Once you have your B.Ed. , you will be eligible for PGT Computer Science roles.

If You Have a M.Sc. in Mathematics, Physics, or Statistics:

• To qualify as a PGT Computer Science teacher , you will need:
  1. A Post Graduate Diploma in Computer Applications (PGDCA) from an institution recognized by AICTE/University .
  2. A B.Ed. degree to meet CBSE requirements.

If You Have a M.Sc. or Post graduation in Any Other Subject:

• You will need to complete:
  1. A 'B' level course certification from DOEACC (National Institute of Electronics and Information Technology - NIELIT) .
  2. A B.Ed. degree to fulfill the CBSE teaching requirements.

To solidify your teaching career as a PGT (Post Graduate Teacher) in a CBSE-affiliated private school after completing your M.Sc in Computer Science, the most recommended path is to pursue a B.Ed degree from a recognized university.

Another option is Clearing the CTET exam which can enhance your credibility and open doors to teaching positions in various CBSE schools across India.

Also,you can do phd if you have dream of becoming assistant professor in university.