As I said in a previous article about it, Switched-On ICT is the name of the primary (elementary) scheme of work I've been involved with, as Series Editor. That role has entailed advising on assessing pupils' ICT capability, and helping to make sure that the instructions and assessment opportunities and statements are both consistent and accurate.
The text is engaging, with topics such as We Are Explorers, and makes full use of Web 2.0 and other free applications as well as schools' Learning Platforms. Here is a list of what I see as its strengths: