School Lunch is a Policy intervention. It is presumed to be of benefit to students' physical health. On a negative note it may have the effect of stigmatizing students, it lowers socio-emotional health which in turns lower physical health and influences Learning Competencies. The net results may be negative on Learning Competencies. Given these significant links this has an overall impact on student performance.
A low Socio-Emotional state has a negative impact on Cognition & Control and has an impact on MATH progress.
School lunch is presumed to have a benefit to students' physical health. On a positive note, Physical health increases Learning Competencies. The end result is a positive net effect on overall student performance.