@bucketDad Thanks! Yes, I can agree with you on that (that the concordance tables punish the SAT too much). SAT scores and percentiles have been inflated, yes, but mostly in the middle and bottom ranges of the scoring curve, not at the very top.
The reason why 1500 and 34 is so common is that they are roughly equivalent scores, even though the concordance tables and percentiles suggest otherwise. Why? Because the SAT is the more competitive test, at least in terms of the students who take it each year.
In recent years, many more students have flocked to the ACT in lieu of the new SAT, at least partially out of trepidation concerning unpredictable SAT score conversions. In fact, the ACT has already overtaken the SAT in market share because of the ACT’s reputation as the more straightforward test. But the SAT still has roughly 45% of the high-school market, and it is often secretly preferred at Ivy League schools and other prestigious institutions (they will never admit this, of course) who are accustomed to receiving SAT scores, and prefer to “compare apples to apples.” It should also be noted that some schools, such as those in the the University of California system, convert SAT and ACT scores to a common number (“UC Score”) before sending the scores to the admissions committee members, in order to avoid such bias.
I will fully concede that the ACT is a spectacular second option for many students, mostly because it’s easier to score in a higher percentile on the ACT (among other reasons, this is true because 12 U.S. states–Colorado, Hawaii, Illinois, Kentucky, Louisiana, Michigan, Montana, North Carolina, North Dakota, Tennessee, Utah and Wyoming–currently require all graduating seniors to take the ACT, including students with no plans to attend college, thus diluting the talent level of its test-takers). And yes, the ACT now has the added benefit of being more of a known quantity, especially when compared to the new, revised SAT. This is why I encourage most of my private students to take both the SAT and the ACT in order to give them more options, and more chances at an elite-level score.