of massachusetts and utah and they did a study looking at half a million kids in massachusetts comparing students three and six feet apart. there are a lot of caveats. in areas of high transmission, they want to keep the high school and junior high school at six feet apart. let s say where there is a choir or singing, you want to increase that. the most important part to mention about these guidelines it depends on a lot of things. first of all, the amount of ventilation in a classroom. if you have a poorly ventilated classroom, even six feet may not be enough, certainly not if you are not wearing masks. also, in terms of getting teachers vaccinated, there is also the issue around level of community transmission as well. we have to be careful not to stick everything at the boiler plate of three feet or six feet. we will be talking to you later, but we wanted to start out with the breaking news and we will update that through the hour. president biden and vice president