This is an unnecessarily difficult statistic to find. It would be great to see the average number of years of programming experience for instructors at each school.
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Most schools are extremely bad about this. In many cases, they want to hide the fact that they hired inexperienced instructors.
At K2 Data Science (www.k2datascience.com), all our instructors and TAs have links to their LinkedIn profiles. So anyone can double-check and contact them if needed.