International schools vs Swiss public schools (Geneva)

Would appreciate an advice on both (apart from the cost), what are the pros and cons of both in ur experience?
Also, if anyone has kids in Ecole La Decouverte or Ecole Mosaic (both primary), would you recommend them or not? And why?
My daughter is 8, has so far attended an Intl school in The Hague and has no French. At her age, it seems she would pick it up quickest in Swiss schools so am toying with idea to put her in Swiss school to start with then move her to Intl in secondary. Any advice much appreciated.