BonnieArbittier_lamar_elementary_tiger_time_assertive_emotion_mental_health_elementary_SAISD_charter_5-11-2018-3 Stone, a fourth grader at Lamar Elementary School, raises his hand to discuss times he has felt assertive. Credit: Bonnie Arbittier / San Antonio Report Stone, a fourth grader at Lamar Elementary School, raises his hand to discuss how he has felt “assertive.”