The student's orthographic skills on primary and lower-secondary schools

(in English): This diploma thesis focuses on how spelling is taught as a part of Czech language lessons at primary schools. The thesis aims to describe the level of spelling knowledge in students attending first and lower secondary schools, and it also attempts to compare their performance. Attention is first paid to the essential theoretical framework of the Czech language, its spelling, and teaching in Czech. The possibilities of evaluating spelling knowledge in Czech language lessons are highlighted. For the practical part, a survey was performed at a primary school in Kolín, and a total of 84 pupils attending grades four to eight were selected. The participants were presented with several spelling exercises in three different formats: dictation, gap fills, and error correction. The collected data were analysed and compared. The findings suggest that the pupils' spelling knowledge reaches only an average level, and it is, therefore, necessary to pay more attention to spelling practice. With specific phenomena, better results were recorded in the 7th and 8th grades than with younger pupils