Our department is responsible for teaching a mandatory 2-semester general chemistry course to nearly the entire freshman class (~1000 students each semester). Since our section sizes are small and we have ~30 faculty teaching all the sections at once, we use 3 multiple-choice "common exams" during the semester to "anchor" the course content and pacing. These exams are mostly written in-house and administered to all students in course at the same time during a designated exam period.