Open interview, give questions one afternoon in advance, prepare for one night, draw lots the next day, and say the first one after the first one is drawn.
Go directly to a private visit, then give you a content and a text, prepare lessons on the spot, write lesson plans, and then put them away and read them. You can read the materials when preparing lessons. And draw lots to say. Some people want a written test, while others don't.
How long will it take? Needless to say, 40 minutes or 20 minutes. Generally, the interviewer below someone who goes for an interview tells you that 10 minutes is more than enough ~