School construction started in 1973 and was complete by 1978. We will assume, for simplicity, that the treated children are 2-6 years old in 1974 and control children are 12-16 years old in 1974.

• The average years of schooling for 2-6 years (treated children) old children in high intensity county is 6 years and in low intensity county is 9 years.
• Similarly, the average years of schooling for control children (12-16 years old) in high program county is 5 years and in low program county is 11 years.
• Using this information, estimate the impact of this program on years of schooling and answer the following questions:
  1. What is the intervention? (0.5 point)
  2. What is the outcome researcher are primarily interested in? (0.5

point)

c. Which method does the author use to estimate the programs

impact? (0.5 point)