Have a read of our page on education and schools in Dublin for some general information.
Where are you from? If you think your child could easily adapt to a public school, read our page on primary schools. Keep in mind that many schools in Ireland are openly religious, and you'll want to find a school with the same values as yourself. There are many primary schools in Dublin, so you might want to have a look at this map of schools in Ireland to narrow down your selection and then select a few schools to research. The rest of the site is also quite useful.
I was told you don't get to chose your Irish state schools, ( they also all looked really run down compared to London. Most no canteens ! Kids eating lunch in classrooms! I kid you not! ). I was informed a place is given by how close you live to the school. So how do I get to pick one after I rent a house? This would be dynamite info. Could you also put a list of private primary schools. Apart from the amazing looking Headfort in the Meath suburb we have come up blank!