2015 IEEE. Mathematics continues to be a major hurdle for engineering students. The authors presented results of a pilot precalculus summer program at FIE 2014. In the current paper, we examined longitudinally the results of the institutionalized version of the precalculus summer program over four years. Students who scored less than 22 on the Mathematics Placement Exam could either a) participate in the personalized precalculus program (PPP) or b) take the fall precalculus course. The research question for this study was: How well did the students who took the PPP perform in the precalculus and engineering calculus course sequence compared with the students who did not participate in the PPP? The PPP included an online study plan with practice problems in common areas of difficulty in algebra and trigonometry and required online tutoring sessions for 30 hours over a six-week period for the first three years and the same number of hours over a three-week period for the fourth year. For this paper, we analyzed the trends over four years of the program to determine whether participants are progressing successfully through the engineering calculus sequence.