Level I and II trauma centers will likely have patients requiring a higher level of care. There are a lot of factors that go into a facility and their trauma designation, but in my research it seems to depend on the program that you are applying to. Depending on where you want to go, call or email the program directors in that area and see what they recommend. Sometimes it seems that some CRNA schools want ICU experience, some schools want high quality ICU experience at trauma centers. It will also depend on the rest of your stats, if you have really good grades, CCRN, good GRE scores if required, good LORs, this may not mean so much. Hopefully I have been helpful, even if I am not yet enrolled in CRNA school.