Bugger. I had dang near perfect SAT scores, too.
All right. It's over. I give up on America. We're too stupid to live.
Perelman studied every graded sample SAT essay that the College Board made public. He looked at the 15 samples in the ScoreWrite book that the College Board distributed to schools nationwide to prepare students for the essay. He reviewed the 23 graded essays on the College Board website meant as a guide for students and the 16 writing "anchor" samples the College Board used to train graders to properly mark essays.
He was stunned by how complete the correlation was between length and score. "I have never found a quantifiable predictor in 25 years of grading that was anywhere near as strong as this one," he said. The shortest essays, typically 100 words, got the lowest grade of one. The longest, about 400 words, got the top grade of six. In between, there was virtually a direct match between length and grade.
He found that he could also grade the essays with a good correlation with their awarded scores just by looking at their shape and length—he didn't have to actually read them.
It gets worse. Take a look at the official policy of the College Board.
He was also struck by all the factual errors in even the top essays. An essay on the Civil War, given a perfect six, describes the nation being changed forever by the "firing of two shots at Fort Sumter in late 1862." (Actually, it was in early 1861, and, according to "Battle Cry of Freedom" by James M. McPherson, it was "33 hours of bombardment by 4,000 shot and shells.")
Perelman contacted the College Board and was surprised to learn that on the new SAT essay, students are not penalized for incorrect facts. The official guide for scorers explains: "Writers may make errors in facts or information that do not affect the quality of their essays. For example, a writer may state "The American Revolution began in 1842" or " 'Anna Karenina,' a play by the French author Joseph Conrad, was a very upbeat literary work." (Actually, that's 1775; a novel by the Russian Leo Tolstoy, and poor Anna hurls herself under a train.) No matter. "You are scoring the writing, and not the correctness of facts."
How to prepare for such an essay? "I would advise writing as long as possible," Perelman said, "and include lots of facts, even if they're made up." This, of course, is not what he teaches his MIT students.
Students are not penalized for incorrect facts.
I felt like clawing my eyes out when I read that, but fortunately the gusher of tears made it impossible to get any traction.
Remind me to ignore SAT scores forevermore.


I trained a few years ago to grade the writing scores of SATs because, well, I was tired of driving 2 hours each way and getting paid $4k a year as an adjunct professor.
Needless to say, as I trained, I realized that I was grading essays entirely incorrectly: I wanted them to be good. ETS had a ridiculously strict grading system, based, as you say, on style over content.
I couldn't justify rewarding the next generation of postmodernists, so I never took the final job of grading. I may have had no money, but at least I could sleep at night!