The study aimed to investigate the effect of the course content developed based on Turkic World literary texts on students' academic achievement and attitudes towards Turkic World texts in the 8th-grade Turkish course. Gender and age differences in attitudes toward Turkic World texts were also examined. A quantitative research approach with a weak experimental design was used. Fifteen students studying in a public school in Bursa, Turkey, participated in the study. The experimental procedure applied "Course Content Prepared with Turkic World Literary Texts (CCPTWLT)" for six weeks, while the researcher used the "Turkic World Literary Texts Achievement Test (TWLTAT)" and "Attitude Scale for Turkic World Literary Texts (ASTWLT)" as pre-test and post-test to reveal the effect of the experimental procedure were developed by the researcher. Mann-Whitney U and T-Test were used to analyze the data. The study results show a significant increase in students' academic achievement by implementing CCPTWLT (p=0.003). However, no significant difference was found between the pre-test and the post-test, although students' attitudes increased in the Interest sub-dimension (p>0.05), Turkic World sub-dimension (p>0.05), Language of Texts sub-dimension (p>0.05), Pronunciation dimension (p>0.05) of the Attitude Scale after CCPTWLT practices. Finally, the study revealed that the ASTWLT scores did not differ significantly according to age and gender.