Teacher Dawn Burrows teaches a maths class to Year 6 pupils from Landywood Primary School in a socially distanced classroom in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

Year 6 pupils from Landywood Primary School line up after break on distance markings in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

A Year 6 pupil from Landywood Primary School washes her hands after break in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

Year 6 pupils from Landywood Primary School line up after break on distance markings in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

Teacher Dawn Burrows gets ready for a maths class with her Year 6 pupils from Landywood Primary School in a socially distanced classroom in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

A Year 6 pupil from Landywood Primary School washes her hands after break in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

A Year 6 pupil from Landywood Primary School studies maths in a socially distanced classroom in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)

Year 6 pupils from Landywood Primary School study maths in a socially distanced classroom in Staffordshire, Britain on June 8, 2020. As part of the government's easing lockdown measures, most primary schools in England reopened to more pupils on June 1. (Photo by Jon Super/Xinhua)