Yes, usually. Board meetings are not public meetings, but they are open to the public (so you, your whānau and the wider school community can go). You don’t have speaking rights.
All minutes should be publicly available, so you can see what was talked about at a meeting if you can’t go in person.
Some things will need to be talked about in private, like if they need to protect a student’s privacy. You’ll be told if you need to leave a meeting.