The High Court has ruled that the education being provided by the State to a six-year-old autistic boy is appropriate and the State should not be ordered to provide a particular type of education sought by his parents.
Seán Ó Cuanacháin had taken legal action against the State through his father, Cian.
The Ó Cuanacháins wanted the court to compel the State to provide Sean with 30 hours a week of a type of tuition called Applied Behavioural Analysis (ABA).
The court was told this was a well established method of teaching children with autism.
Seán has access to some State-funded ABA tuition at his school in Co Wicklow.
However, Mr Justice Michael Peart ruled there was not sufficient evidence to determine that the model of education provided by the State was not appropriate.
The court has yet to rule on whether the Ó Cuanacháins should be awarded damages for delays in providing Seán with education between 2002 and 2004.
A full judgment will be delivered on 27 April.
It is understood that at least 150 other families in a similar position were waiting to see the outcome of this action.
Costs in the 68-day case are estimated at more than €5 million.