Passage: The education system in Mauritius consists of pre-primary, primary, secondary and tertiary sectors. The education structure consists of two to three years of pre-primary school, six years of primary schooling leading to the Primary School Achievement Certificate, five years of secondary education leading to the School Certificate, and two years of higher secondary ending with the Higher School Certificate. Secondary schools have "college" as part of their title.  The government of Mauritius provides free education to its citizens from pre-primary to tertiary level. In 2013 government expenditure on education was estimated at about Rs 13,584 million, representing 13% of total expenditure. As of January 2017, the government has introduced changes to the education system with the Nine-Year Continuous Basic Education programme, which abolished the Certificate of Primary Education (CPE).The O-Level and A-Level examinations are carried out by the University of Cambridge through University of Cambridge International Examinations. The tertiary education sector includes universities and other technical institutions in Mauritius. The country's two main public universities are the University of Mauritius and the University of Technology.

Question: How many years of primary schooling do children in Mauritius receive?
six