The importance of money definitely varies between social classes. This may be due to the fact that people of a lower social class often times spend more time worrying about how to generate money and fit in a country where having less is frowned upon. In fact, there is actually a tie between money and educational success. A study conducted by Selcuk R. Sirin of New York University concludes:
"Socioeconomic status [SES] is not only directly linked to academic achievement but also indirectly linked to it through multiple interacting systems, including students’ racial and ethnic background, grade level, and school/neighborhood location (Brooks-Gunn & Duncan, 1997; Bronfenbrenner & Morris, 1998; Eccles, Lord, & Midgley, 1991; Lerner 1991). For example, family SES, which will largely determine the location of the child’s neighborhood and school, not only directly provides home resources but also indirectly provides “social capital,” that is, supportive relationships among structural forces and individuals (i.e., parent–school collaborations) that promote the sharing of societal norms and values, which are necessary to success in school (Coleman, 1988; Dika & Singh, 2002) [Sirin, 2005]"
"Socioeconomic status [SES] is not only directly linked to academic achievement but also indirectly linked to it through multiple interacting systems, including students’ racial and ethnic background, grade level, and school/neighborhood location (Brooks-Gunn & Duncan, 1997; Bronfenbrenner & Morris, 1998; Eccles, Lord, & Midgley, 1991; Lerner 1991). For example, family SES, which will largely determine the location of the child’s neighborhood and school, not only directly provides home resources but also indirectly provides “social capital,” that is, supportive relationships among structural forces and individuals (i.e., parent–school collaborations) that promote the sharing of societal norms and values, which are necessary to success in school (Coleman, 1988; Dika & Singh, 2002) [Sirin, 2005]"
In other words, students who come from a more monetarily stable household are more likely to be able to succeed in school due to having the ability to focus on their studies instead of worrying about things that maybe happening in the home monetarily. These students are also more likely to be surrounded around adults and peers with like-minded ideals about education and success.