This case study details the integration of an online grading platform in a Calculus program. Initially implemented to increase the efficiency and quality of grading written assessments in a large undergraduate program, the effects were many and surprising. Two main concerns surfaced that we needed to address, namely: (1) consistency in grading; and (2) quality of feedback to students to facilitate learning. With greater course coordination and the use of the online grading platform for homework and exams, student success in Calculus and retention of students continuing from Calculus I to II dramatically improved over the past 2 years.