Scottish Government acknowledged there remains a risk of further disruption due to the coronavirus pandemic.
Erin Bleakley, 17, held a protest at Glasgow's George Square on Friday over the SQA's controversial moderation process.
First Minister Nicola Sturgeon and her deputy, John Swinney, were forced to backtrack after initially branding the process 'credible'.
No confidence motion comes as pupils gather in Glasgow to protest downgrading.
This year's results based on teacher estimates after exams were cancelled due to the coronavirus pandemic.
Party raises concerns over the SQA adjusting pupils’ grades based on school's performance history.
The exams authority has said it will not consult schools or colleges if it downgrades teacher estimates.
Holyrood's education committee has raised concerns over the new grading system to replace cancelled exams.
Education secretary will set out the finer details of imminent school closures later.