Study of a group of young men drawing

Study of a group of young men / students / artists drawing. On the left are two seated men holding drawing boards one of whom draws with a pencil? held in his left hand. On the right are two standing figures one, on the right, also holding a drawing board and, on the left, a man holding a paper / scroll in his left hand. The latter figure (teacher?), drawn in brown ink, wears a cloak and looks scornfully down at the two seated students. Drawn in pen and ink with hatching and cross hatching. Paper has a watermark depicting a bird / phoenix in a circle