This is the 14676th most frequent Russian word.
пересдачи
Retakes (of exams).
The word 'пересдачи' here refers to the scheduled opportunity to retake an exam after failing the initial attempt.
Если ты провалишь экзамен, возможность пересдачи предоставляется через месяц.
If you fail the exam, the opportunity for retaking is provided in a month.
In this sentence, 'пересдачи' denotes the act or instance of retaking an exam or test for improvement.
После пересдачи студент получил более высокий балл.
After the retake, the student received a higher score.
The usage of 'пересдачи' in this context pertains to the enrollment process for the retake opportunity.