I scored a 700 on Math level 2 the first time I took it, then 6 months later on my second try I scored an 800. How will schools that require all scores to be sent and that I’m interested in applying to for Engineering - like Cornell, UPenn, & Carnegie Mellon - react to these scores, specifically that I got a 700 the first time then an 800, because I know that a 700 is really not that great, but I improved a lot with the 800.
There are plenty of reasons one may get a lower score, but there is only one reason to get a good score.