In January of 2021, students were told schools would be closed for one week. Then they were told they would be closed until the end of the month. Then Leaving Cert students were told they were to come in 3 days a week before it was quickly scrapped.
So it's safe to say on top of all the normal stress 6th year students feel about the looming exams, the current situation of constant worry and uncertainty is significantly adding to it.