I have received so many pointers and tips for all nurses I feel like its time I give back. So today I took my med-surg adult nursing and mental health nursing NLN challenge exams for admission into the LPN to BSN program at OU. These exams grant you 30 or so credit hours toward your BSN . There are 4 exams in total and you can retake each test two times. A 70% is needed to pass.