The cases are good for in-class use. The length of these cases makes it easy to assign them to be read during class.âRoger Shouse, The Pennsylvania State University DIVERSITY SCHOOL IMPROVEMENT LIMITED RESOURCES Understanding issues faced by todayâ²s school leaders⦠Authors David L. Gray and Agnes E. Smith have written a book of cases to give prospective school leaders opportunities to resolve complex issues in Kâ12 school settings through reflective questions, activities, and authentic assessment tools for skill development.