KLS > KLM Academy you need to be able to speak Dutch fluently.
The training costs around 122K. Excl. accomodation in NL and the US. Excl. food.
At the end you will have spend between 150-170K euro.
Then there might be a chance you can apply for job in KLM, but is NOT guaruanteed.
Though since TR B737 is incl. in that 122K they might place you as a temp in Arke Fly, Transavia. Some go to Tui Germany. Or Jetair Fly Belgium. But again, to work in Arke, Jetair, Transavia you need to be able to speak Dutch and Tui German.
But if you do speak dutch, then KLS and EPST are the best schools in the Netherlands. EPST places its students also quit quick. Not many of them sit on the couch a long time.