57 degree Celsius or 135 F is the minimum hot holding temperature for baked potatoes.
Sweet potatoes, baked potatoes, cooked rice, cooked beans, etc are considered as potentially hazardous and hence they must be held at 135 degree F or 57 degree Celsius or hotter.
A restaurant setting food holding and food held before service has lot of differences. Steam tables or cold-holding units are not used in most of the child-care facilities. Cold foods are usually prepared and refrigerated in child-care facilities.
Whenever needed to serve children they are removed from the fridge and then served. The pH and water activity interactions in a food determine whether the food is potentially hazardous or not.