This is an interesting article regarding the effectiveness of voucher programs. In all my research, there were very few if any published studies that could conclusively state that they were either effective, ineffective, or neither. The first link demonstrates the lack of evidence/support, and the second link gives an argument as to why that is:
This is a very interesting/helpful article that touches upon the policy changes with a special focus on education, health, and pensions. Its helpful for getting a overall understanding of how the policy transformed pre-Pinochet and afterwards.
the graph showcases how different political situations in chile affect the gdp of the country verses the rest of the latin american area.