Background: Post COVID-19 syndrome has emerged as a long-term complication in adults and children, its effect on adolescents’ performance in school is not well studied. Methods: This is a survey of children in grades 10-12 looking into the physical/psychological impact of prolonged post COVID-19 symptoms on school performance. Results: 32/54 students with a mean age of 16 years old had COVID-19. Two were hospitalized, 10 had symptoms lasting more than 4 weeks. Commonly reported chronic symptoms were fatigue and cough. Seven students quit sports, 8 had decrease in their academic performance. Adolescents with a family history of long haulers and those being infected more than once where more likely to develop prolonged symptoms, quit sports and perform poorly in school. 3/14 (21%) reported not seeking help. Conclusion: Post COVID-19 syndrome is associated with decline in physical and mental performance in school yet only 79% of adolescents will talk about it.