MAN Demak is one of schools which has an excellent class namely bilingual natural science class. The objectives of this research are to explain learning objective, learning materials, methods, learning media and learning resources, learning assessment, and the appropriateness of learning process and learning assessment in bilingual natural science class based on process standard and assessment standard on 2013 curriculum. This research was qualitative method within descriptive study. The data were collected by observation, interview, and documentation. The data was analyzed using data reduction, data display, and conclusion drawing/verification. The findings of this research showed that (1) the objective of English teaching and learning in Bilingual Natural Science Class was to improve the student’s skill in the use of foreign language academically and can be used practically in society with keeping hold on his faith, taqwa, and akhlaq, (2) the materials were covered in two kinds of textbook namely teacher’s handbook “English 4 success” and English handbook from government based on 2013 curriculum, (3) several teaching methods were Grammar Translation Method (GTM), Direct Method (DM), Audio lingual method, cooperative learning method, problem solving method, and Communicative Language Learning Method (CLL). (4) the learning media were Whiteboard, board marker, laptop, LCD, picture, some text, and, audio, while learning sources were teacher’s handbook, internet, native teacher and library, (5) the assessment of English teaching and learning were summative and formative assessment and it used test and non-test assessment, then (6) the English teaching learning process and the assessment in bilingual natural science class were based on process standard and assessment standard on 2013 curriculum althought the implementation have not maximal enough. The result of this research can hopefully be used for reflection for English teacher and school to improve the quality of English teaching and learning process in the class.