Earlier this year, schools around the world closed their doors. By early April, nearly 1.5 billion children and young people were at home because of the coronavirus pandemic.
More than 60 million teachers were out of the classroom as well, according to UNESCO. But as the weeks and months passed, countries began easing out of lockdown and restrictive measures.
Schools began to reopen. Social distancing, masks, 'bubbles', temperature checks, blended learning and regular handwashing have all become features of Covid-19 classrooms.
As Ireland's 4,000 primary and secondary schools begin reopening, we spoke to five Irish teachers working overseas about their back to school experience.