The significant u-turn follows controversy in recent days, after the country's Calculated Grades process was judged to have impacted unfairly on students attending schools in economically deprived areas.
Like Ireland, final summer school exams in Scotland were cancelled and replaced with a system of predicted grades due to the Covid-19 pandemic. The Scottish education minister, John Swinney, told the Scottish parliament that while three quarters of results remained unchanged by the national standardisation process, 134,000 teacher estimates had been adjusted.
Saying it was "deeply regrettable that we got this wrong", Mr Swinney apologised and said the new results would be issued as soon as possible.