The play's cast typically consists of only two people: Miss Margarida, a school teacher, and a male student.
This "student" often sits among the audience members, whom the "teacher" addresses and treats as if they were real school children.
In many productions, the audience is encouraged to behave like a group of naughty, unruly 13- to 14-year-old students in a classroom.
The actress playing Miss Margarida has a great deal of power to improvise, and can deliver jokes or rants inspired by audience members.
Miss Margarida's classroom techniques represent all the ways in which life can rob human beings of their individuality, and beat them into conformity and submission.