Is a C good grade?

It depends on the context. In the United States, a C is typically considered an average grade. It is not a bad grade, but it is not a great grade either. However, some universities and colleges may consider a C to be a failing grade. Additionally, some employers may prefer to hire candidates with higher grades. Therefore, it is important to consider the context in which the grade is being given before determining whether or not it is a good grade.