European School Survey Project on Alcohol and Other Drugs
Conducted every four years, the European School Survey Project on Alcohol and Other Drugs (ESPAD) is a collaborative effort of independent research teams in more than forty European countries.
It is the largest multinational research project on adolescent substance use in the world. The overall aim of the project is to repeatedly collect comparable data on substance use among 15- to 16-year-old students in as many European countries as possible. More information can be found here on the ESPAD website.