Complex sentence: By a broad definition, schoolwork can be extended to refer to any academic activities at school, and would therefore include exams, tests, quizzes, and projects as well as normal work, such as worksheets, problem sets, or readings.
Split into simpler sentences: By a broad definition, schoolwork can be extended to refer to any academic activities at school. Types of work would include exams, tests, quizzes, and projects as well as normal work, such as worksheets, problem sets, or readings.