Most students have experience writing research and lab reports before coming to the program.
However, students will still need guidance and direction from you. The summer session is a great place for students to expand on what they already know about writing research and lab reports and then take their work to another level. They innocently assume the students know what they expect. In turn, they feel pressured to give students lower marks because the report was not what they were looking for. This can be avoided by providing clear guidelines of your expectations for the students.