Yes, I was thinking that focusing on the inputs (resources, etc) is key to performance. I feel that we are in such a "performance" or "aptitude" focused era that we are neglecting the resources that build "aptitude".
Essentially, Chapter 7 argues that research into educational expenditure and performance in the labor market has been flawed due to the incredible number of variables previous studies have not taken into acccount, such as geograpfic location, migration, and other demographics, Not to mention, many studies have assumed schooling quality acts uniformly across education groups:everyone born in a state with relatively high schooling quality receives an identical increase in their logearnings regardless of their residence or their number of years of schooling.
Thus, there hasn't been a proven correlation between the quality of education and eventual earnings in the labor market.
This topic has encouraged me to think of a few other ideas regarding input and achievement:
-how does a child's access to technology affect future performance?
-how does a child's access to higher education and the possibility of post-secondary education affect performance?
-how does this relate to ethnic/race and gender groups and performance in national labor markets?