Yes! Thousands of International Medical Graduates (IMGs) use Firecracker regularly to review medical knowledge and prepare for the USMLE. On average, IMGs complete about 100 review-style questions per day, or about one hour of quizzes. Caribbean medical students also love Firecracker, and have historically performed very well on their board exams when they've used Firecracker to prepare: http://blog.firecracker.me/students/how-this-firecracker-scored-a-258-on-usmle-step-1

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