>> this is the head of new york city's public schools, the first year. she and the department have been working to reassure both parents and staff that schools are as safe as they can be in this pandemic era of teaching. no student vaccine mandate in place, they're seeking consent to test -- >> we're testing our students, 10% of our population every two weeks. and we are also having all that faculty be vaccinated. so i think doing those two things together is going to really continue to build that level of protection around our students not eligible to be vaccinated. >> the testing part of a multilayer approach. they're touting the ppe supplies, cleaning procedures and ventilation. at least two hepa filters. and hundreds of district sites