Lower secondary school starting age in Portugal

Period	Lower secondary starting age	Change
2023	12 years	0 years
2022	12 years	0 years
2021	12 years	0 years
2020	12 years	0 years
2019	12 years	0 years
2018	12 years	0 years
2017	12 years	0 years
2016	12 years	0 years
2015	12 years	0 years
2014	12 years	0 years
2013	12 years	0 years
2012	12 years	0 years
2011	12 years	0 years
2010	12 years	0 years
2009	12 years	0 years
2008	12 years	0 years
2007	12 years	0 years
2006	12 years	0 years
2005	12 years	0 years
2004	12 years	0 years
2003	12 years	0 years
2002	12 years	0 years
2001	12 years	0 years
2000	12 years	0 years
1999	12 years	0 years
1998	12 years	0 years
1997	12 years	0 years
1996	12 years	0 years
1995	12 years	0 years
1994	12 years	0 years
1993	12 years	0 years
1992	12 years	0 years
1991	12 years	0 years
1990	12 years	0 years
1989	12 years	0 years
1988	12 years	0 years
1987	12 years	0 years
1986	12 years	0 years
1985	12 years	0 years
1984	12 years	0 years
1983	12 years	0 years
1982	12 years	0 years
1981	12 years	0 years
1980	12 years	0 years
1979	12 years	0 years
1978	12 years	0 years
1977	12 years	0 years
1976	12 years	0 years
1975	12 years	0 years
1974	12 years	0 years
1973	12 years	0 years
1972	12 years	0 years
1971	12 years	0 years
1970	12 years