I have some experience with "the 'Brown Eyes, Blue Eyes' Game" — as it was called by a school where I barely survived it.

The school (name and locale on request) is still in business; it was, and is, an incredibly Politically Correctitudinous place — where the events described below occurred in October 1970: a month after I had started there in third grade as a transfer student from another school where I had been seriously abused (by teachers, and by delighted classmates at the teachers' instigation) throughout the two years it took me to convince my parents that this was being done.

At my new school (which Mom and Dad had selected as a low-pressure, "accepting" sort of place), the third-grade teacher (Elaine Watts) was one of several throughout the country who were, right then, trying out "Blue Eyes, Brown Eyes" as a method of teaching children not to be bigots. As I recall, my third-grade teacher had recently learned about this “game,” at a conference, from its inventor Jane Elliott (with whom I, too, decades later also had some personal contact, under circumstances described below).

Anyway, Ms. Watts (yes, my third-grade teacher, was one of the early adopters of the title "Ms.”) had been trained by Ms. Elliott in this "game" which was meant to teach us all about prejudice by first telling us as scientific fact — for a week or two — that blue-eyed people were a superior race (smarter, cleaner, braver, better-behaved, more alert, beautiful, smelled nicer, and all the rest of it) and revising classroom procedures accordingly (blue-eyed children getting to be first in line for recess, and all imaginable other sorts of special favors and extra perks and help, academically and otherwise, while brown-eyes like me were pariahs: the two green-eyed kids were counted among the brown-eyes, simply in order to make the numbers of the two castes roughly equal) — then, of course (as Ms. Watts told us on Friday afternoon after a week of this grade-school Hitlerism), for the NEXT week the tables would be turned and the BROWN-eyed kids were to be the masters, the blue-eyes the underling pariahs) ...

… well, that's how it was SUPPOSED to be done, by the protocol for this exercise, BUT ... when Friday afternoon came, and Ms. Watts announced: "Actually, I've made a mistake: it turns out that BROWN-eyed people are the better type of human; of course, I probably made that mistake because I have blue eyes, which explains why I had to study for years and years before they would let me teach even little third-graders" ...

… when Ms. Watts announced the turn-around (which we'd all been expecting anyway, as we all had been told in advance that this whole set-up WAS an experiment to teach us about bigotry and its consequences), most of the class (blue-eyed and brown-eyed both) said they were "not gonna keep playing, because we are NOT gonna take having HER pointing to me- be one of the good guys! If you do this give me 'perks' and top-dog status when it's the turn of brown-eyed kids to get these, we are NOT gonna cooperate with your experiment any more!"

The "popular girls'" clique, especially — all of whom happened to have blue eyes (and all of whom had ALREADY despised me thoroughly from the moment I arrived at the school ) — swore that, IF I were granted a turn at privilege, they would disrupt, not only the experiment, but the classroom and all teaching therein, if I were to be given privileges or favor of any sort. "NO WAY are you putting her above us, at our school!" (They were all very conscious — and made sure that I, too, never forgot — that I was there on a hefty scholarship, and that my parents therefore paid far less of our teacher's salary than was paid by the parents of the "popular clique" kids.) So ...

… what did Ms. Watts do, for the sake of the instructional game? She decided that, come Monday, for the rest of the experiment I'd be an "Honorary Blue-Eyes": so that the game, and all we were presumed to learn therefrom, might go on.I am sure my classmates learned SOMETHING from having my own interests sacrificed for (as I was expressly told) the sake of theirs. however, I have excellent reason to believe that what they learned was not the lesson intended. Throughout the rest of my time at the school — grades 3 through 9 — and much later during conversations/correspondence with some of them (once Facebook made it easy to find old classmates & re-introduce myself), it was plain every day that the lessons they'd learned (or that they'd already had well in hand, which the experiment simply reinforced) were:

/a/ the ancient joys of bigotry and peer pressure,

/b/ that the less numerous may be sacrificed to the more numerous, in the name of the greater good of the greatest number. (Ms. Watts, and other teachers and staff there, never tired of explaining to me that I should actually feel honored to have "the opportunity to help out the other students' psychological and emotional growth, by being the student they can gain so much from. You are just one person, they are a greater number, and fairness is when the greatest number benefits," etc., etc., etc.),

and /c/ for at least some classmates, a corresponding dread that, when I continued to be bullied by the teacher and classmates ("in the name of the greater good") throughout the months and years AFTER the experiment, any classmate of mine might well become the next victim if s/he ever protested or sought to counter the way they had to watch me being treated by teachers and others. ("You've got to be carefully taught ... to hate," runs a Broadway show tune: it's unfortunately a lesson far more easily and quickly learned than the SOUTH PACIFIC lyricists imagined.)

Decades later, here's how I came into contact with the experiment's deviser, Jane Elliott. She had just appeared on OPRAH (where Mom and I saw her tell how she had eventually from third-grade teaching into a new and full-time career— still continuing, as I write this — of doing a version of "Brown Eyes, Blue Eyes" as sensitivity training at colleges and in the workplace).
So Mom wanted to find and SCREAM at this woman for devising something whose observable after-effects on me had been a direct contributory cause for the school's referring me to a psychiatrist ( it the first I had had, anyway).

I called Oprah's studio next morning when they opened for business, got Jane Elliott's phone-number, and had her on the phone with Mom and me within twenty minutes ... Jane listened to my story (from me and from Mom) and stated unequivocally that:

/a/ the exercise should NOT have been sacrificially distorted and conceptually mangled as it had glaringly been in my case (accommodating a group's cherished bigotry is no way to teach group-members to wish to end it!),

and that:
/b/ if Jane had been the one in charge (doing this exercise in a school, workplace, or anywhere else), she would have looked beforehand at the extant interpersonal dynamics — and, therefore, would NOT have done, or recommended, or enabled doing, her exercise (or anything similar) in a classroom where "pariah status" would have to be assigned to a newcomer to the group, let alone to the group's SOLE NEWCOMER, let alone to anyone who was ALREADY the group's chosen and approved pariah/scapegoat/target/etc.

How many other people out there have been harmed by any version of "Brown Eyes, Blue Eyes"? (whether applied "by the book" or applied as in my case) — are there any other people out there to whom (as in my case) it was INTENTIONALLY misapplied because otherwise it would have privileged someone who was already the designated sacrifice? I need to know: and I want, deserve, and maybe need to be in touch with other such people. But so far, whenever I've met other survivors or the exercise, anywhere, 99.98% of them have said it was a great and wonderful thing. (Some, like the teacher who had inflicted it, told me I should be proud to have been sacrificed for a procedure this great, this wonderful.)

UPDATE: Much later, a couple of my relatives and I (as well as my third-grade teacher) were interviewed for a book discussing the experiment, which can be pre-ordered now and will be available on September 10:

https://www.amazon.com/Blue-Eyes-Brown-Cautionary-Brutality-ebook/dp/B0993DS1LY/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=1629400987&sr=8-2
The book had originally been planned to appear much sooner, but the major publisher who had wanted the book (Simon and Schuster) changed its mind when the results of the experiment turned out to have been deleterious in many ways to numerous participants (in the short term and in the long term) — S&S decided that this aspect of the outcomes was politically and publicly unacceptable, so the author had to work hard to locate a new publisher (the University of California Press).
There WILL be a firestorm, I think, when the book appears on September 10!

FURTHER UPDATE: So far (September 13), the universe has not collapsed.