All exams this summer have been cancelled for Welsh students.
Education minister Kirsty Williams announced on Wednesday that exams would be cancelled but promised that Year 11 and Year 13 students would get marks to allow them to continue into further education or jobs.
Schools are closing from Friday, with no reopening date yet known.
Ms Williams has said that she hopes there will still be results day in August, but it has left many students, teachers and parents wondering how exams will be awarded.
Details are still being confirmed, but Qualifications Wales has released the first details and promised to continue issuing updates.
The regulator says: "We are working with WJEC to establish the fairest way to issue grades for GCSE, A level and Skills Challenge Certificate qualifications".
It is not yet known if students in Wales will be offered the option to sit their exams in September, if they prefer, which the department for education is planning.
How exam grades will be calculated:
Grades for GCSE and A level qualifications in 2020 will be calculated on a combination of factors which may include marks for work completed to date, for example AS results for A level grades, and standardised teacher assessed grades.
Teacher assessed grades will be based on what teachers would expect a learner to achieve at the end of the course.
They need to represent a fair, reasonable and carefully considered judgement of the most likely grade that might be achieved in normal circumstances.
This is a professional judgement based on the combined assessment information held for that learner and will be a holistic judgement rather than focusing on a single source of evidence like mock examinations.
These are not target grades or aspirational grades and are not related to performance measures, which have been suspended for this year by Welsh Government.
WJEC say they will contact schools and colleges in April to provide further details on how and when to submit teacher assessed grades.
Will AS level or units taken by Year 10s be marked in the same way?
No. The priority is to get GCSE, A level and Skills Challenge Certificate results decided.
Qualifications Wales say: "We are not planning to issue grades for AS Levels or for unit assessments taken by Year 10 learners in the same way.
"For those learners, we are looking at a variety of options, including the opportunity to sit exams in subsequent exam series. We will share more detail on those plans as soon as we can."
Exam board WJEC say: "We can confirm that year 10 students sitting and cashing-in for a full GCSE qualifications this summer will achieve a qualification grade, as we will use the same process as for year 11 learners."
What about vocational qualifications?
"Most vocational qualifications are offered across the UK, so we are working with fellow regulators, exam boards and governments across the UK to ensure consistency.
"We are still considering the fairest way to issue grades for learners who are studying qualifications other than GCSEs and A Levels.
"We will share more detail on those plans as soon as we can," reads a Qualifications Wales statement.
In England, students will also have the option to sit an exam early in the next academic year – which starts in September – if they want to, the Department for Education said.
A WJEC statement says: "We are currently working with Qualifications Wales to consider how we progress with the Skills Challenge Certificate and also with other regulators for level 1/2, level 3 and entry level qualifications we offer. We will provide further information in due course."
How will results be released? Can I appeal?
Qualifications Wales say a date will have to be agreed for results to be released.
"Given the nature of the grades that are being issued this year, there will be no review of marking in the normal way. "
You can read both statements, one from Qualifications Wales, and the other from WJEC, in full.
