The two girls at the back are embroidering at a wooden frame using needles; the teacher and guardian (mother?) at the front are standing over a seated lttle girl working at a wooden embroidery frame. The seated woman at the far right is making bobbin lace.
Against the wall at the back is a length of material, perhaps three-dimensional, with pockets or compartments for holding (needlework?) objects.
Digital source of illustration (retrieved 16th July 2016).
WV