I am pretty sure I did standardized tests at 4 or 5 years old. It was one-on-one with an educator and was basic things like how many ways can you classify these random blocks (shape, size, colour), or how to arrange image tiles to tell a chronological story. We didn’t do reading or pencil-in-the-bubble until grade 3.

No disrespect but first 5 years of a child’s life is critical to their development- it can be very noticeable how enriched a child’s environment has been -

That's not untrue but it also doesn't even begin to justify standardized testing for 4 years olds.

How much of that is demonstrated to come from advanced track education? To what degree has it been shown that there are differences in outcome from advanced track education at this specific age? None of these correlations are givens.

How are the previous generations not a bunch of bumbling idiots with their horrifying lack of 4 year old advanced track education? What does a advanced track even look like for a 4 year old? Advanced toilet training? Advanced snack time? Advanced color identification? Advanced not taking the other kid's toy? Advanced not throwing a tantrum?

What a load.

Do you have children? It seems possible you don’t

It’s pretty simple for a teacher to sit with a four year old and do a basic eval. This is not fill in a bubble standardized testing.

Your type of attitude also explains I think why needed tailoring doesn’t happen earlier. These same screenings can identify kids who could use extra support, need glasses, need a hearing aid and much more. It’s fascinating to see these so resisted.

Well off kids get tons of this eval naturally from neurotic parents, pediatrician visits and more.

Your challenges for a 4-year-old seem more like those for a 2-year-old. So, I'm going to assume you have had little exposure to children. That, or the children where you live develop very slowly.