Generate a full detail guide that provides a high-level overview of different philosophies of education. The guide should be accessible to parents and new educators. It must include simple, clear explanations and comparisons of: 1. Progressivism (associated with John Dewey). 2. Essentialism. 3. Perennialism. 4. Constructivism. For each philosophy, explain its core beliefs about the purpose of school, the role of the teacher, and the nature of the curriculum. Please include a supportive disclaimer.