Personally, from my own experience and the experience of others I know the greatest disadvantage to summer born students is when we gain the impression that we are stupid.
The summer born effect should vanish a few years down the line, it is not a problem in countries with a later start age, that it does not vanish in the uk suggests that the real problem is due to the low sense of self worth that these students develop. The study quoted in the original report says that they don't link summer borns to later problems many other studies disagree. For a start there is the reduced life chances from poorer educational outcomes, but they have also found increased criminality self harm, addiction and mental health problems. This is hugely worrying as our system is potentially having a seriously damaging effect whilst at the same time providing no benefit to the older majority as the most successful educational systems all start education later.
My experience had a rather awful teacher tell me I was stupid and she did humiliate me on several occasions. Some of my friends remember this and said they felt awful years down the line but they were glad it was not them at the time. My experience was extreme but other children are just as dangerous, not been put in for the SATS so as not to damage the schools rankings and they'll be plenty of kids willing to tell you that you're thick and we often take our peers judgements more seriously than the people who can truly judge our ability. The constant testing and pressures on teachers to meet targets also means that the average for their age summer born will be left behind, the teacher must focus on bringing those children just slightly behind up for the stats, the youngest who are likely to be weakest in the year are forgotten as the attention will not improve the schools SAT scores. The children soon begin to understand that they are not worth extra attention.
My personal experience has been awful. I am not stupid, I am far far from stupid, I know that I am very intelligent but I don't think I will ever feel it. I went back to education in my thirties after lots of encouragement, I'm doing a science degree at an elite university. My grades are so high that I can go into each of my 4 exams and do nothing but draw a penis on each paper and still get a 2.1 (or possibly expulsion so I won't risk it). Yet I constantly feel like I don't deserve my place here, that my grades are due to luck, that they will catch me out eventually, I know that it is stupid but I cannot turn off the lack of worth that sits inside of me and dates back to the early lessons I learned.
I feel physically sick at the thought of others getting the same messages and carrying them in the same way. What makes me so angry is that no one is benefitting from our system. We are damaging some children for their whole lives for no bloody reason.
Not drunk on tonights rant just very emotional as I am feeling pressure of looming finals and still feeling that I don't deserve the top degree I will get cos I'm thick and will get caught out sooner or later.