My son went to the toughest high school in California. He didn't become a national merit commended student because "oh Californians are just simply smarter than Iowans so we have moved the goalposts for California kids". He scored 34 on the ACT = 1500 on the SAT because of hard work and sacrifice but he wasn't allowed into ANY "selective" schools because "oh your ZIP code indicates you are privileged and you must have crammed for the SAT. And hey did you hear the news? The SAT means nothing! ". He only did 4 hours of homework per night but was in a school district which educated kids from arguably the #1 University in the USA so the competition was stiff. He was embarrassed and shamed by his friends for having a B+ GPA.
He was forced to go to a state school 3000 miles away which accepts 70% of applicants - at huge tuition cost - because it was a backwards state school not implementing "The new cultural revolution!". He applied to 12 schools - none "most selective", none "extremely selective", 1 "highly selective", and 9 "moderately selective" and was admitted to 2 of the lowest schools on the "moderately selective" list. The next rank lower is "admits everyone".
Meanwhile I know parents who pulled their kids out of the toughest high school because class rank is THE ONLY THING that universities care about. They sent their kid to a low income school and their achievement test scores plummeted. Their strategy was to "win by slackibg," in the new cultural revolution! This is so they could get into Harvard and so that Harvard could feel good about itself and assuage its white guilt.
My son's dad is self made, losing his own dad at age 13. The dad took many financial risks and moved twice to be in better school districts, to challenge the son. His mom came from dirt in China (daughter of a hotel maid). Their hard work has been classified as "privileged background" by virtue of their zip code. The parents inherited $50k total and were both self made and lived like paupers until age 35 to advance their educations, then took high risk unstable jobs to catch up in life...