• Hillcrest_Students We serve more than 500 students at Hillcrest Elementary School and do our best to create a supportive environment so they can reach their full potential in our classrooms and in their lives. In this section you can find copies of the student handbook in English and Spanish as well as information about the PBIS program. PBIS stands for Positive Behavior Interventions and Supports and it is the model we use to create the best school environment we can.