It is what I expected too till I was surprised recently when I was training two lower valued ones (6-8T) that I signed the previous season. Their progress in training both for training skills and a special ability per condition spent (or rest packs spent) were far from expectations despite that they were still like raw players (not powertrained or even much trained before - still with low white skills and of course low grey skills). They turned out be to medium trainers or maybe even slower (definitely not first class or second class fast trainers). Their speed of progress was like the speed of what a fast training low 5-star player would have but those two players were 3 stars. Maybe something changed due to the new academy system but only one of them was signed after the new system came. Their market values when they reached a certain quality (4 stars, meaning 5 stars of the previous level) after training confirmed it too - it was like 0.4M less than the value of a fast trainer at that quality - a significant difference in that level. I had academy player that was in the higher price that was sign two seasons before. When he reached that same quality for that same level, his value was 0.4M more. Someone would have expected that a fast training academy player signed on the level after to have a higher value than that of the one that was signed the level before, when both reached the same quality. So, those two players were not fast trainers.