ER Lesson 2: 'Google generation has no need for...'

In an attempt to encourage you to do some reading of your own, here I am, on a Saturday afternoon, trying to get my head round a couple of points mentioned in the original version of the article on Don Tapscott's view of education - can anyone help me, please?

• The Battle of Hastings (there's even a game here - which I can't seem to win, playing as either William or Harold!...);
• Ofsted;
• shadow schools?...

I'd appreciate it if each of these items were briefly explained by at least one of you - thanks! ;-)

P.S.: Vocabulary I particularly like in the article: "His observations chime with a trend in British classrooms to cut back on traditional teaching and to personalise learning."