This number is incorrect. The actual class sizes run about 30 people or so. I am currently in the program. There are part-time students adding to class totals so the admission number isn't likely 30, but I can't say for sure how many.
I know that, when I applied, I had a 4.0 in my BSN, also had another undergraduate degree with a 4.0, and 3 publications as well as really good reference letters, and a thoughtful admission essay. It IS very competitive but, considering it is one of the top 7 FNP programs in the country, I am not surprised.
In terms of FNP programs in MD, Hopkins has a program, UMB, Coppin State, Salisbury State, and Bowie State. There is also Catholic in D.C. and Uniformed Services University in Bethesda. I heard that Bowie has not had the same passing rate on the cert exam as the others in the past, not sure if that was the NP program, the RN program, or other, or if they've fixed the problem.
I hope this helps.