How much design-studio work is there in an architecture degree?

In many architecture programs, design studios are one of the central parts of the degree and continue across several years. Students often begin with basic drawing and model-making, then work on projects such as houses or public buildings in later years. However, the degree also includes lectures and practical work in areas such as structures, environmental design, history, and urban planning; it is not made up of studio work alone. The amount and frequency of studio work vary by university, year, and course.