Students learns the intricacies of language, the power of expression, and the limits of language, as well as spelling and punctuation rules, mostly from the books they read, especially textbooks. Textbooks are regarded by students as "sacred texts" whose accuracy, information, and spelling are beyond debate. In this respect, it is understood that textbooks have a mission as an educational material that goes beyond the intended purpose. Although the current Spelling Guide of the Turkish Language Association is followed in the spelling of primary, middle, and high school textbooks, the spelling of the texts such as the National Anthem, Atatürk's Address to the Youth, and the Student Pledge, which are mandatory in textbooks, does not adhere to the current Spelling Guide. This situation hinders the adoption and implementation of spelling rules, which form the basis of language teaching. It is important in terms of spelling education and spelling consistency that these texts are included in textbooks and student report cards with the spelling given in accordance with the current Spelling Guide on the Turkish Language Association's website. This study will examine the spelling of the National Anthem, Address to the Youth, and Student Pledge included in textbooks in terms of compliance with the Spelling Guide, and it will reveal the academic and psychological consequences of writing these texts without adhering to the Spelling Guide.