It sounds really interesting and like a good idea for Amalia IMO.
But I would back Marengo's doubts - it seems more like an unconfirmed rumor at the moment. All articles I can find cite a Telegraaf-article, which is behind a paywall (
https://www.telegraaf.nl/nieuws/1668850/amalia-mogelijk-naar-internationaal-college-in-china) but seems to refer to sources in "the heart/inner circle of the royal family" as the only source to back up the story and without any further evidence
Still, the Telegraaf seems to be pretty sure about it and the idea doesn't sound impossible to me.
This video (
https://www.rtlnieuws.nl/rtlboulevard/prinses-amalia-vertrekt-naar-china) sums it up surprisingly well IMO, unfortunately it's only available in Dutch.
They look back to Willem-Alexander's time at a Scottish school and speak about the probability of Amalia leaving for the school in Changshu. WA himself went to Atlantic College in Wales - the oldest UWC school. The school in Changshu is the newest UWC school (founded in 2015).
They say that WA and Maxima let their children choose their schools by themselves and that it would be more or less up to Amalia herself to decide if she wants to study abroad (and where). They think it could be nice for Amalia to be so far away from all the attention in the Netherlands, but they also think that China is to far away at this age and that they haven't really spoken about the subject in the family yet and definitely didn't decide anything yet (obviously that's all pure speculation too).
Another aspect they speak about shortly is the language, and I'm glad that they put that a bit more in perspective than some other people/articles:
Amalia may have studied Chinese at her school for a few years, but normally that's not enough to really speak Chinese fluently or even to communicate on a low level- definitely not with the quality of the Chinese lessons in the most Dutch schools (here I have to trust the information in the video- but I can say that it's certainly true for the German Chinese classes I know of). (IMO that is not because Chinese is so terribly complicated (it's not), but because it's so different to European languages, has a terribly complicated (or better learn intensive) writing system and maybe mainly because there is no "teaching and learning tradition" for Chinese in Europe). So typically Amalia may know some words in Chinese and have a vague impression about some grammar aspects, but wouldn't be able to really communicate in Chinese at this point.
Still, that doesn't speak against the plan to study at this school in Changshu IMO. It is an international (and English-speaking) school and while you have to study Chinese while you are enrolled, it seems that you are not required to speak Chinese to get admitted. So it could be a great and unique opportunity for Amalia to improve her Chinese and pursue and deepen her interest in the Chinese culture (if she indeed has this interests).