how much stock do schools put into GRE or MAT scores?

Just thought I would throw this question out there. I just got back my MAT score which was a raw score of 49 out of a 100 and was in the 56% percentile over all. However, the school I am applying to stated that they wanted at least a 50. But I personally know of people who got in the school with high 40's. So I am wondering if I will have to take it over? I usually did better on the practice test, so I know I am capable of getting over a 50. I was very dissappointed, but am willing to do what ever it will take to get in. I do have good grades and have been a nurse for 4 1/2 years with SICU, MICU and ER experience. Three of those years in a level one trauma ER, which I know they will accept. I felt that my rersume looked pretty good, until I got back my MAT score, but now I am concerned. Any advice or input would be appeciated.Thanks!!!