No.. if this is the case you are trying to emphisize I agree with you...
Well, you know well that irrespective of what is written in the books, the teacher will present it however he/she wants. And that's where problems start...
The "history" of the Republic of Cyprus (1960 onwards) is taught in GC schools at the last term of the final year (at least when I was a student). The book contained minimal information about the 1963-1974 period, concentrating on what led to Makarios' 13 points, how the state was almost dissovled because a prostitute died, the TC retaliation, the bombardment at Tylliria, the incidents at Kofinou and the removal of the Greek division from the island.
In my class the teacher read the several newspaper extracts in the book (skipping the "analysis" bit) and moved on to the 1974 events, pointing the finger of "who brought the turkish army to Cyprus" to the Greek junta and their representatives in Cyprus. In the class next door, they talked about how the RoC was the step before enosis, how the EOKA B' quest was justified when Makarios started talking about "feasible" solutions, and how Makarios eventually brought the Turkish army to Cyprus a few days before Enosis was declared. In both cases, all students had their (i.e. their parents') views, which created lengthy discussions with the teacher based on random arguments and accusations about the thing that they could talk about: whose fault was it that the 1974 events occurred.
The point I want to make is that there is a significant gap between the views of GCs, a disagreement between GC themselves on this issue. There's a book, that states what is commonly acceptable, but there are teachers, "historians", that transmit their own views. And we all have our own views on this. Personally, I haven't lived through that period; the question is, on what basis have I constructed that view?
Now imagine what the gap would be between what may be taught by GC and TC "historians" on average, even if you make the books the same... The question is, how do you guarantee that the teacher will teach what is in the book, given that this is such a sensitive issue?