I don't quite understand how that would be less stressing for the students. As long as you teach in a way that even someone starting without specific knowledge

I don't quite understand how that would be less stressing for the students. As long as you teach in a way that even someone starting without specific knowledge could understand everything, small graded tests along the way are nicer. That's because you can build up your final grade instead of everything depending on one big exam. Also it forces you to study along the way, instead of delaying everything until the final exam.