An increasing number of publishers offer online companion websites that students pay to access with the expectation that using these will significantly increase their grade. This research assessed the students' attitudes toward and the efficacy of components of MyPsychLab, a companion site for Introduction to Psychology. Students reported liking MyPsychLab and felt it helped their grades. Composite data across three semesters and three professors suggest that use of MyPsychLab is associated with better grades for individual students. However, making its use a course requirement did not improve the overall class grade or passing rate. Whether it was optional or required, not all students used MyPsychLab, suggesting a need to improve students' use of available and beneficial resources.