The percentage of students who fall into the "need for instruction" section of the continuum of DESSA scores may vary depending on the specific population being assessed and the thresholds used to define the different levels of need. However, in general, it is expected that a significant portion of students may require additional support or instruction at some point during their academic career. This is why it is important to have effective screening tools and interventions in place to identify and address the needs of these students.