A school leaving certificate signifies a particular level of education completed by the student from their old school.School L eaving C ertificate A pplication – G uidelines and T ips However, in a case where the school does not provide this certificate to the student, the student can write a school leaving certificate application to the school providing the school leaving certificate. Generally, schools provide these kinds of certifications by themselves to the students. The reason for leaving their current school may be of any kind, but they need a school leaving certificate to indicate that they have completed a particular level of education from their previous school and are now eligible to join another school. When a person wants to leave their old school and join a new one, they need a leaving certificate from their previous school.