Margaret Siegel is advocate for educational reform and effective classroom management. She wrote from a position of direct insight into the challenges of the American public school system, specifically focusing on the critical but often overlooked role of substitute teachers. Sigel has advocated for structural changes in schools, emphasizing that improving support for teachers and addressing student discipline are key to fostering an environment where effective learning can occur. She was an early skeptic of viewing computers as a "cure-all" for educational issues, instead prioritizing human instructional support and administrative accountability.