Through high school we learned both. I took Spanish all 4 years, but had different teachers throughout that time. Most tests and oral exams would allow either, but I do remember some looking specifically for ustedes.

In university we mostly used ustedes, but I had a professor from Spain who would use vosotros. He never expected us to use it but everyone was expected to understand it when reading or in conversation.

Are the incentives still going on that made it $20k and not $30k?

Thank you for linking right to the video! I’ve only gotten a chance to listen to/ watch the first song and it was awesome.