To simplify what I said before, these are some of the routes:


JC/Poly>>>NIE 4 years>>> Teach in sec/pri>>>Take masters in education from NIE>>>Phd from NIE>>>Teach as a lecturer in NIE

JC/Poly>>> 4 year specialised degree from NUS/NTU(economics, history, physics etc)>>>1 year PGDE from NIE>>>Teach in JC/Sec/Pri>>>Take masters in education from NIE>>>Phd from NIE>>>Teach as a lecturer in NIE


JC/Poly>>> 4 year specialised degree from NUS/NTU(economics, history, physics etc)>>>1 year masters in your major>>>4 years Phd in your specialisation>>>Teach as a lecturer in universities in your area of specialisation