Teachers can sign up for the Hour of Code here: Sign up your classroom today! and there is a how-to guide also aimed at teachers. In the past, a CPD model that has worked well in primary schools is for the computing lead to run a whole-staff Hour of Code session, followed by individual teachers running HoC with their classes. This year’s Hour of Code will feature a wide selection of activities, including ones that will challenge more advanced students. The school can print certificates for teachers and students (and parents!) at http://code.org/certificates.