Standardization and validation of the attitude scale towards mathematics ( BSW ). This study aimed at standardization and validation of the attitude-scale towards mathematics. Its 32 items are grouped into four sub scales, measuring: enjoyment of mathematics, fear of, or having trouble with mathematics, enthusiasm and interest and perception of usefulness and relevance. Standardization took place at the class-level for the first three years of secondary education ( LBO/MAVO/HAVO/VWO ). An additional questionnaire was used to collect background data on pupil and school and comparative data regarding the evaluation of-, homework spent on- and school marks for mathematics, Dutch and English. The second file ( P0981b ) contains data collected from the mathematics teachers involved, referring to their background, teaching methods and test-conditions. Background variables: basic characteristics/ education