According to DR. Lynch (2011) the impact of culture on academic performance on students is defined in three theories they are the cultural deficit theory, expectation theory and the cultural difference theory. These three theories explicitly explain how an academic performance of students depends on culture and expectations of a student on their learners and how teachers behave with students from different backgrounds and communities. Theories also explain how a student’s home environment has to be and how a student has to communicate with their parents and also relation between a student and a teacher. Lynch’s (2011) first theory, the cultural deficient theory projects about students’ performance in schools. Some of the other reasons resulting in poor performances are lack of proper communication with their parents at home and their cultural background, resulting in poor vocabulary and no access to basic amenities like books to read. Most of the students who travel to other countries will face this kind of vocabulary problems, since their mother language might be different from the language that student speak in schools. This theory suggests that a student’s home environment should be always good and parents should provide minimum needs to their children like proper books, if not it will affect student’s skills, knowledge and they may perform poor in school. Relationship between student and a teacher is focused in Lynch’s (2011) expectation theory. A teacher’s behaviour with students depends on the way the students behave in order to mould themselves. Teachers adapt themselves according to the students from certain cultural background. Sometimes the teachers approach might not fit in well with the expectations of student resulting in dissatisfaction and poor performances in grades. This theory is tested by Rosenthal and Jacobson in their Pygmalion effect study