Ask HN: Platform to stream and record classes for free?

Hi! I'm a high school student. Schools in our country have just been closed and I and my classmates (not the whole school, just under 35 people) would like to attend classes online.

The only thing we need is a FREE service to stream and record classes (we can store then on Google Drive). It would also be great if it was like a conference call so that we can talk but a live chat is enough.

Our school doesn't have a G Suite account and I'm not sure if we can create a throwaway account. Getting our headmaster's approval might take days or weeks as they're not really into tech, so there's might be now way to create an official school account. Every day counts as we have our final exams in May.

Which platform would you recommend?