In view of the linkages between food and NCDs, the Centre for Science and Environment (CSE) has been working for necessary policies and practices aimed at promoting good food, especially among schoolchildren. CSE has also, in the past, highlighted measures to regulate marketing and promotion of HFSS foods through necessary laws on food labelling, claims and advertisements. In an attempt to address this issue further, CSE conducted a survey, Know Your Diet— Schoolchildren Survey, a one-of-its-kind online diet survey to understand what schoolchildren in India were eating. The survey, meant for children of 9–17 years, also provided an instant diet report to each respondent. Over 13,000 children responded from various states of India.