I don't know that a specific score would make any particular teacher take notice. There is also the issue with the new SAT being so new and different from the old one and the over-inflated percentiles (in effort to reverse ACT's increasing popularity, there are now two different sets of percentiles) not even making sense as well as the significantly lower ceiling on the reading section.
However, if your 7th graders scored at least 1370 combined (690 Math, 680 EBRW), they can apply to DYS or perhaps argue that they are comparable to 99.9 percentile based on DYS criteria. ( I think I am remembering the College Board Concordance correctly as the DYS chart just lists the previous1300/660/640 and a reminder to adjust the scores using the concordance tables)
