98 per cent of Leaving Certificate students have registered for the new calculated grading system.
Over 60 thousand pupils had signed up on the portal before today's noon deadline.
Around one thousand students did not register their details.
The Department of Education will engage with schools over the coming weeks to figure out if there were parrticular reasons for this.
Minister for Education and Skills Joe McHugh TD this afternoon thanked the 60,035 students that have registered online for the Calculated Grades student portal as the extended deadline passed.
In a video message to the Leaving Certificate class of 2020, he said: "This is a special day, it would have been your last day of school.
"I am conscious that you have not had a chance to have the usual rite of passage and have had a different finish to your years of schooling than any of us expected. But you have worked hard, and now you have exciting futures ahead of you as you move on to the next stage of your lives.
"Thank you for all of your efforts and hard work and congratulations on all you have achieved. And thank you too for the important role you have played and will continue to play in stopping the spread of Covid-19."
There are some outstanding queries in the portal's helpdesk system and those are being worked through. The helpdesk will continue to engage with those students over the coming days.
It is hoped that the Calculated Grades will issue as close as possible to the usual timeframe for examination results.