Measuring attitudes of teachers, in the first phase of secondary education, towards their job, educational innovations and the concept of extended primary ( i.e. basic ) education and its implementation. Teachers / teaching experience / working hours / school subjects / non-teaching functions / type of school / satisfaction with job / work load / educational innovation opinions, attitudes, expectations, motivation to participate / influence of pupils on teacher's job / influence of external factors on educational innovation ( proneness ) school management, board, parents, colleagues etc. / evaluation of structural aspects of extended primary education ( Voortgezet Basisonderwijs VBAO ) broad input of pupils, heterogeneous groups of pupils, integration of subjects, minimum output levels, broader scope of subjects / expectations regarding effects on delay of job choice, boys, girls differentiation in subject choice, influence of social background / preferred organizational structure of secondary education / individual differentiation of pupils / experience with innovation projects ( + evaluation ) / experience with working with heterogenous groups ( + evaluation ) / subjects in minimal basic education package and their relative weight / consequences of broader scope of subjects induced by integration of lower vocational and general secondary education / setting / streaming / subject choice / testing / obligatory languages. Background variables: basic characteristics/ politics/ organizational membership