Melrose Park Primary School is where my daughter's attend and attended. Great school with a great very caring no nonsense principal. The teachers are also great, and good community spirit.
I attended Rydalmere Public school. It was a great school in the early 1990's and since then it's only become bigger and better. It would be one of the biggest public schools in Rydalmere/Ermington from a selection of approximately 3.
We send our child to St Marys as it's a catholic school. It's on the boarder of Ermington and Rydalmere however I know of 2 public schools in Ermington and I hear they are great from other parents.