A Risky Game — Stephen Schwandt

A teacher draws Julie, a student, into joining him in staging a psychodrama for an unknowing senior English class, purportedly to study the students' reactions; but events become painful, frightening, and complicated, and Julie questions the choices she has made and the teacher's motives.High-school student Juliet Lamar becomes interested in her teacher and his unorthodox classroom behavior until she gets caught up in his mysterious, secret experiments