Bibliography (11):

1. https://www.abdn.ac.uk/achds/environment/birth-cohorts/children-of-the-1950s-317.php

2. Education and adult health: Is there a causal effect?

3. Does Education Really Improve Health? A Meta-analysis

4. What works may hurt: Side effects in education

5. Does Head Start Do Any Lasting Good?

6. Third Grade Follow-up to the Head Start Impact Study Final Report [OPRE Report 2012-45]

7. Does Attendance in Private Schools Predict Student Outcomes at Age 15? Evidence From a Longitudinal Study

8. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Eleven-plus  :

      https://en.wikipedia.org/wiki/Eleven-plus

   2. Regression discontinuity design

   3. Preregistration (science) § Registered reports  :

      https://en.wikipedia.org/wiki/Preregistration_(science)#Registered_reports

   4. Confidence interval