most schools look at your most recent scores; however, they will take your previous scores into account...
case in point: i took the DAT twice.. first time scoring 20/20/17 (with a 20 in RC).. second time scoring 22/22/18 (with a 17 in RC). obviously, i did considerably better the second time OVERALL, but my RC dropped to an embarassing 17...which was something like 35 percentile. However, I called the schools to discuss my scores and many of them said they would take my 20 RC score into account as the second exam may have just been a fluke.
jb!🙂