The key here is supporting and encouraging the girls that don’t have much experience (the pre-requisite for most CS courses is only an A Level or equivalent in Mathematics), but do show all the right potential of good maths and problem solving skills. If coached correctly these young women will pick up the programming knowledge they need to in no time, and catch up (if not overtake) the boys who have been tinkering and hacking with code for years. And when you go through all of this advice, its clear that it’s just as relevant to employers as it is educators.