classes:  lecturer. the subject should have a clear lesson plan or a syllabus so that students understand what they are learning about.  curriculum. the subject should have a clear lesson plan or a syllabus so that students understand what they are learning about.  facility. the subject should have a clear lesson plan or a syllabus so that students understand what they are learning about.  general. the subject should have a clear lesson plan or a syllabus so that students understand what they are learning about.