This research is about the appropriateness of English textbook “Bahasa Inggris” for eleventh grade based on the content standard of 2013 revised curriculum by The Agency of National Standard of Education (BSNP).The objectives of this research was to describe the content appropriateness of English Textbook “Bahasa Inggris” for eleventh grade based on the content standard of 2013 revised curriculum by BSNP.This research used qualitative approach, which analyzed the materials of the book or content analysis. The source of data analysis in this research was English Textbook “Bahasa Inggris” for eleventh grade. To collect the data, the researcher used documentation and interview. The Data Analysis technique in this research used Miles and Hubberman Theory. The instrument used in this research is checklist based on the textbook evaluation criteria issued by BSNP. The result of this research that the content of the English Textbook “Bahasa Inggris” for eleventh grade is appropriate with content standard of 2013 Revised Curriculum. It is based on the data as follows: the compatibility of material items with core competence and basic competence is 87 % or in a good category. The accuracy of material is 94 % or in a very good category. Learning supporting sources is 76 % or in a less enough category. Based on the research finding, it is recommended to be used for eleventh grade students.