My evaluation: Dewey's critical thinking on school formal education provides the direction and goal for the comprehensive practical activity curriculum. The course of comprehensive practical activities should pay special attention to the sociality of education, the purposeful influence of education on the life of students' social groups, as well as the knowledge beyond language symbols and knowledge related to learning, practice and life, thus forming rich experience.
One of the most important problems that educational philosophy must solve is to maintain an appropriate balance between informal and formal, casual and intentional forms of education. Democracy and Education (Chapter 1)
My comment: Dewey's view on the balance between informal education and formal education seems to be about the comprehensive practical activity curriculum. The comprehensive practical activity course is between the life course and the subject course, and becomes the link and bridge between them. Dewey's point of view is that life education is informal and school education is formal; Life education is random, and school education is intentional.
Can it be said that the comprehensive practical activity course, from the content point of view, is aimed at students' complete life and uses subject knowledge to solve life problems to realize the integration of the two? It is not only intentional, but also allows randomly generated and personalized content, which is formal, personalized and informal in school organization.