Should you go to school when have walking nomanya?

"Walking nomanya" isn't a standard English phrase. It's likely a misspelling or a phrase from another language. If you mean you have a minor ailment, like a common cold or mild flu, then whether or not you should go to school depends on the severity of your symptoms.

If you're feeling well enough to concentrate and participate in class, and you don't have a contagious illness, then it's generally okay to go to school. However, if you're running a high fever, experiencing severe fatigue, or are contagious (e.g., with the flu, a bad cold, or COVID-19), it's better to stay home to avoid spreading illness and to allow yourself to rest and recover. Your own judgment, and the advice of your parents or a medical professional if needed, are key to making this decision.