Saifeldin:

The food must be colorful as children are stimulated by color.

Best regards,

Debra

Dear Saifeldin,

The following publications cover the answer to your question:

1-School Feeding Programs: Improving effectiveness and increasing the benefit to education. A Guide for Program Managers:

http://portal.unesco.org/education/en/files/37434/11029402593School-feeding-programs.pdf/School-feeding-programs.pdf

2-https://en.wikipedia.org/wiki/Midday_Meal_Scheme

3-Food for Thought: Evaluating the Impact of India’s Mid-Day Meal Program on Educational Attainment

http://econ.berkeley.edu/sites/default/files/Bonds.pdf

4-Evaluation of a pilot school programme aimed at the prevention of obesity in children

http://heapro.oxfordjournals.org/content/18/4/287.full

5-School Lunch Waste among Middle School Students: Implications for Nutrients Consumed and Food Waste Costs

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788640/

Hoping this will be helpful,

Rafik