https://techcrunch.com/2020/04/05/zoom-new-york-city-schools/

As schools lie empty, students still have to learn. But officials in New York City say schools are not permitted to use Zoom for remote teaching, citing security concerns with the video conferencing service.

“Providing a safe and secure remote learning experience for our students is essential, and upon further review of security concerns, schools should move away from using Zoom as soon as possible,” said Danielle Filson, a spokesperson for the New York City Dept. of Education. “There are many new components to remote learning, and we are making real-time decisions in the best interest of our staff and students.”