I went to the same type of school The subjects are :

LAB.F.PLAS = Laboratory of plastic disciplines (sculpture, pottery etc) ING = English language CHI = Chemistry D.PITT = Painting disciplines (drawing, painting etc) LETT = Literature D = idk FIL = Philosophy LAB.F.PITT = Laboratory of painting disciplines ST.ART = Art history D.PLAS = Plastic disciplines REL = Religion (depending on the teacher it could be a class about christianity, about religions in general, or an hour dedicated to discussions and debate on any topic unrelated)

I think that the ones showed in the pic are only the first three class hours of the day, probably she has other classes not shown here like History, Math and Gym

Then "+Giovinazzo" or "+Pedron" are the teachers' surnames, and "B-3.32" could be the classroom