The reasons for this kind of school leave can be physical discomfort, family emergency or taking exams and training.

1. Physical discomfort: If you feel unwell, you can ask for leave from school for reasons such as cold, fever, headache and stomachache.

2. Family emergencies: If there are emergencies at home that need to be dealt with, you can ask for leave from school, such as illness at home and emergencies.

3. Take the exam or training: If you need to take some exams or training, you can ask for leave from the school and explain the time and place of the exam or training.