"Good grades" means receiving high marks or scores on school assignments, tests, or exams, showing that someone has done well in their academic work. Full definition
The quality of dissertation is very crucial as per the point of view for getting good grades in the dissertation assignments. (studentsassignmenthelp.com)
Also, you may be able to save some money by driving a car with a higher safety rating, installing alarms or even by getting good grades in school. (carinsurancequote.net)
Students can even earn rewards for good grades with some student - approved credit cards. (cardrates.com)