according to the https://www.theclassroom.com/effects-excessive-absenteeism-schools-3900.html . Successful schools cannot survive without physically present students. According to the “Excessive Absences Intervention” research study by author Linda L. Williams, excessive absenteeism by students may result in unlearned course material from fewer hours of instruction, and a disruption of class instruction for teachers who have to administer remediation for the absent student when he returns to school. Excessive absenteeism by students may additionally result in poor academic achievement because students are not receiving instruction on a consecutive basis. This problem also causes low standardized test scores because absent students are not present to learn key concepts and skills that are assessed on standardized exams.
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