At least one of five children have the personality trait Sensory Processing Sensitivity (SPS) (Aron, 2002). Students with SPS, otherwise known as highly sensitive children (HSC) process information deeply, are easily overstimulated, have high levels of empathy accompanied by emotional reactivity, and are sensitive to subtle stimuli in their environment. The trait can have positive implications with a supportive home environment but under stress, the negative aspects can become prominent, leading to poor educational outcomes (Greven et al, 2020; Boterberg & Warreyn, 2016). Children with SPS may need extra support for emotional and behavioral issues or comorbidities of SPS and another issue. This study sought to understand how the trait presents in children at school. More specifically, how the presence of the SPS trait would impact academic performance and behavior. This mixed-methods study used an explanatory sequential design to look at patterns and themes within the data. Statistically, there were no correlations between the high sensitivity students and math scores, reading scores, or any behavioral measure. However, the percentage of at-risk/clinically significant scores for behavioral measures was noticeably different for HSC in several areas indicating that with a larger sample, a statistical difference may be noted. Thematically, teachers reported that students with the trait had either excellent grades or really struggled in academics. Behaviorally, students hid their struggles, had issues with overwhelm, and showed signs of anxiety. Despite a lack of specific knowledge of the trait, teachers had extensive background information in each student and were able to develop supportive classroom strategies to assist children with high sensitivity. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]