You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In school water fluoridation programme, the level of fluoride as compared to the level in community water fluoridation is: and explain in detail?
The amount of fluoride added to school drinking water must be greater than that used in communal water supplies, i.e., 4.5 times the optimum concentration, since children are in school for shorter hours and less water is consumed during that time.

Essentials of preventive and community dentistry
Soben Peter
5th edition
page number 226