Opinions on St Mary's in Lancaster and Mt Mercy Academy?????

Our daughter is currently in the Cheektowaga Sloan School District and will be a Freshman next year. We are entertaining the thought of sending her to St Mary's in Lancaster or Mt Mercy Academy. I know that St Mary's ranks higher on the HS list. any opinions about either school? Any other websites that I can post this question too?? I'm looking for as much feedback as possible since this is a huge descision... thanks in advance!

PS I cant believe I manged to post a message regarding our district without going off on them!

St. Mary's in Lancaster is wonderful. My recommendation is this facility for many reasons. Small, good standing and overall better deal too.