The document discusses assessment in K-12 classrooms. It defines assessment as a joint process between teachers and learners that facilitates higher-order thinking skills. Assessment should be an integral part of teaching and learning. There are different types of classroom assessments, including observable and invisible assessments, as well as various assessment methods that teachers can use to evaluate what students know and can do. The document also discusses effective feedback, which should be specific, timely, and help students improve, versus ineffective feedback that is vague or infrequent. Classroom assessment results should be reported to students, parents, and other teachers.