In the public schools, I would have liked to ensure that actual troubleshooting/problem solving skills remained part of the curriculum, and deemphasized rote memorization for standardized tests. That would have helped in a myriad of ways down the road.
Additionally, in the public schools, I would have liked to see more of a comprehensive introduction to computers. Have computer labs that represent a myriad of systems (Apple, PC, 'Nix, Windows, etc). Computers were treated as novelties as opposed to necessities for far too long.
At the collegiate level, I would have diversified IS programs at the onset by offering various tracks. Start with a core (security practices, overall concepts, etc), but then allow students to go into a hardware track, programming track, networking track or management track (maybe not exactly like that, but you get the gist). This may have helped IT gain greater acceptance as a core business function quicker, as well as helped in the 'maturation' of the industry.
Of course, that is all 20-20 hindsight, and a lot of this is already occurring. Just would have liked to see it sooner.
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