Which type of assessment is characterized as more casual and less structured?

Informal assessment is characterized as more casual and less structured compared to the other types of assessments. This approach often takes place in the classroom through everyday activities, observations, and interactions rather than through formal tests or standardized measures. Informal assessments are typically used to gauge students' understanding in a flexible manner, allowing teachers to adapt their methods according to the immediate learning context.

These assessments can include tasks like discussions, student presentations, or informal quizzes. They provide real-time feedback and help educators make instructional decisions that are responsive to student needs. In contrast, structured, standardized, or formal assessments tend to follow strict guidelines and formats, which are not as adaptable to the learning environment or the individual needs of students.