SIS – Syllabus of PY 1 and PY2

My son (Singaporean) is 3 years old and he is now studying in a very good kindergarten which focus very much on the academic side (Putonghua and English stream).
My very first plan is to apply SIS this year and hopefully he can join PY1 next year.

I noted recently a comment from my friend (her daughter is studying in P2 in SIS now) that the PY times in SIS is very relaxing and not really focus on academic.
However, the school will be very pressing starting P1 (she quoted an example that SIS will complete teaching PINYIN (併音) in 8 weeks’ time in P1.
My friend could not recall that PINYIN (併音) had been taught in PYs stage under the subject of