“…Table 1, containing data pertaining to post-concussion academic performance, indicates three studies that utilized qualitative survey methods, four studies that assessed academic measures (GPA, report cards, and examination scores), and three studies that utilized published inventory or achievement testing tools (Post-Concussion Symptom Inventory, Pediatric Quality of Life Inventory Version 4.0, and Wide Range Achievement Test-III) [7,[10][11][12][13][14][15][16][17][18]. In regard to strength of evidence, 6 studies were classified as cross-sectional studies [6,7,11,12,18,19], 4 were cohort studies [10,15,20,21], 2 were case series [13,16], 1 was a prospective longitudinal study [14], 1 was a population-based retrospective before and after study [17]. "To determine if academic performance was lower in the academic calendar year that students sustain a concussion compared to the previous year when they did not sustain a concussion."…”