S: STATISTICS AUSTRIA, Labour Force Survey (Microcensus). Up till 2002 1st quarter, since 2003 2nd quarter. Compiled on 19 April 2012 Early school leavers refers to persons aged 18 to 24 in the following two conditions: the highest level of education or training attained is ISCED 0, 1, 2 or 3c short and respondents declared not having received any education or training in the four weeks preceding the survey (numerator). The denominator consists of the total population of the same age group. - *) Break in time series.