No, not entirely though it's a bit off topic. There is a difference. The SEN Officers in our area say it is pretty much recognised. Have you ever heard the phrase "porpoise children"? These are children whose special needs appear to "re-emerge" when there is a leap in the difficulty level of curricular content. There's really very little comparison between the type of vocabulary and concepts that children are exposed to in primary and secondary, and many children find the transition hard. This is why many secondaries use Year 7 as a sort of "bridging year" to soften the blow, keeping at least some structures similar to primary. Frequently, the "skill" that is levelled as x at primary becomes y at secondary because actually, the content has shifted so much that the application of the skill doesn't generalise particularly well. The structure of history, say, remains much the same as you posted above - yet there is a massive increase in the technicality of the vocabulary and the conceptual level of what's being taught. So a child's ability to put things in chronological order, or spot and discuss differences between things now vs things then becomes a much harder challenge.
Our team (which comprises of teachers/therapists in a language resource unit) has been doing some work with a group of Humanities teachers wrt one student, trying to explain to them that some of the concepts that are mentioned in another post above e.g.
democracy
revolution
communist
political party
monarchy
dictatorship
revolution
republic
are just totally and utterly inaccessible to this student, but that she can already do quite a lot of the KS2 curriculum e.g. comparing now and then pictures, categorising along a timeline etc, and that our work has to be to somehow bridge between these two... to use plain English and concrete examples that are meaningful to her to develop her understanding of these words over a period of time. Simply speaking, she won't "get it" in the timeframe the secondary curriculum allows.. so we need to do things differently, no matter how important these words are in terms of understanding history, yet it's not enough to just rehash the KS2 curriculum and lock her in at level of learning that doesn't challenge or extend where she's at.
There is such a gulf in understanding of the same skills "look" at primary and secondary sometimes. We've been doing some moderation between teachers and therapists of levels from primary and secondary and qualitatively there is a massive difference in how student performance is judged. Combine this with sometimes poor external assessment and the whole thing becomes very fraught.