There is a great primary school just past Dunshaughlin at the County Club, Rathbeggan National School, I don't have any experience of the school in the village itself.
I don't live there myself just nearby..it has come on a long way but is still lacking in good restaurants etc..From Rathbeggan School I have got to know a lot of people and it would seem that Dunshaughlin still has a country feel to it, with a strong sense of community. There is a lot of planned developemnt, in particular behind the old workhouse on the Dublin side of Dunshaughlin..where abouts are you looking to buy?