insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (1,'A+',100,100,'aplus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (2,'A',96,99,'aflat','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (3,'A-',92,95,'aminus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (4,'B+',88,91,'bplus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (5,'B',84,87,'bflat','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (6,'B-',80,83,'bminus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (7,'C+',76,79,'cplus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (8,'C',72,75,'cflat','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (9,'C-',68,71,'cminus','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (10,'D',1,67,'dflat','');
insert  into `grading_system`(`id`,`letter`,`range_start`,`range_end`,`varname`,`badge`) values (11,'No Grade',0,0,'ng','');