I&#x27;m the guy that wrote the article and yep - I&#x27;m a teacher. Really good points here. I already know the answers with respect to my school and schools of friends and colleagues but that is a small sample and not necessarily representative. It&#x27;s part of what colors my opinion and yes - I agree, one should take everything with a grain of salt.<p>I know for teachers of APCS (my subject), they used to have a large case study to cover. Teacher&#x27;s for which the case study fit naturally into their teaching approach, it worked pretty well. For people like myself and many friends and colleagues, it was a large 100 page document with all sorts of ins and outs that took time from teaching, you know, CS.<p>To your point, a weaker or less knowledgeable CS teacher would probably end up using the case study as a support which could be a good thing.<p>I guess this also brings a question of depth to mind - in AP Calc, should kids be proving and deriving or memorizing. I&#x27;m in the prove and derive camp but a lot of people think otherwise.<p>Anyway - thanks for your comment here - would you mind cut and pasting it over on the blog - I think it&#x27;s a really good point and would love to save it for posterity and future readers.