Private school criticises 'endemic flaws' in calculated grades as 96% of its students see marks cut

The Institute of Education, which had more than 800 Leaving Cert students this year, says 96% of their students had a grade reduced in the calculated grades process. File Picture.

One of the country's largest private schools has called for changes to this year's Leaving Cert appeals process after 96% of its students had a grade reduced due to what it describes as "endemic flaws" with calculated grades. 

The Institute of Education, which had more than 800 Leaving Cert students this year, said it has discovered what it believes to be "fundamental bias" in the methodology used to assign calculated grades to students. This follows an analysis carried out by data analytics firm Krisolis.