Multilevel modeling an innovative tool for analyzing clustered data: application to education and its projection on environmental management

The objective of this article is to show how multilevel modeling a tool that most appropriate analyze clustred data in many field (education, business, environment, energy consumption etc.). Thus, we used approach students' achievements morocco using TIMSS database. results several factors influence the academic performance Moroccan students mathematics such as student’s gender, Student’s SES and principal's emphasis on success.