^ yeah you're gonna want to start citing sources because an awful lot of that sounds like, to be quite blunt about it, stereotyped bullshit.
Also myopically focused on pure academia while entirely ignoring the arguably far more important part of social learning. Artificially separating the sexes, thus depriving them of casual and natural daily contact with each other, during what are still very much formative phases of growth isn't going to help anyone develop a healthy and nuanced idea of the opposite sex. One only learns how to be around people by being around people, and gaps left by ignorance are filled with superstition and bullshit.
There is no neutral position in this case. There are only two of us human beings: a man and a woman. And the Personality develops in comfortable conditions. So this is an independent choice for everyone - in which environment they are comfortable growing. Probably, children with the usual hormonal background will be better off in the classroom where both girls and boys study, because such children will be able to get all the necessary communication skills, social communication, and at the same time not suffer from a complete shift of attention from study to the opposite sex. For those children whose hormonal background is heavy and sexually active, it would be better to limit themselves to the opposite sex in school, and to develop the ability to communicate with people somewhere outside of school.
Opponents of separate education call much more reasons why you do not need to separate young men and women. The essence of all the arguments comes down to one thing - a decrease in social activity in general and a lack of communication skills with the opposite sex in particular. You just mentioned that.
I also agree with your opinion, and I also believe that in mixed classes, teenagers learn to solve problems together, understand and respect each other's thinking and worldviews, which will be useful to them in adulthood when they start working in a mixed team. Therefore, from the point of view of later life, instruction in mixed classes is much better, but I repeat that mixed education is better for ordinary children who do not have extra activity in terms of sex.
