I think the 10th example in your worst practice list could be implementing a 'one-size fits all' approach. In this approach, a school or a district or Local Authority deploys a particular piece of software or hardware in the belief that it is appropriate for every pupil, student or teacher. In this approach, the versatility and flexibility of ICT to meet individual needs is overlooked. The ability of the technology to support the range of educational approaches is ignored in favour of a 'common' approach. As a result, the quality of ICT in a school becomes poorer rather than enriching the education for all.