Never knew about them. Found their Wikipedia page & truth to say, I'm unimpressed. In fact, I'm a bit alarmed.
First impression is that this is actually "answering to the test" on steroids. Maybe that's what the parents wanted & so the model works? 
https://en.m.wikipedia.org/wiki/Mindspark?wprov=sfla1 …
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That large proportions of people have reading skills lower than high-end NLP a) has been demonstrated by the
@oecd b) hasn’t been taken adequately into account by the#agi#singularity#Futureofwork panic crowds.
) and that's not getting fixed soon enough for 
No high end NLU can understand a story as well as an average person (eg who did what to whom, when, where and why). (Some people have trouble with orthography, very few with comprehension.)
