In theory, yes. However teachers need to adapt materials to their own style of teaching and to their audience. It can be very hard in practice to teach someone else's materials and have it be 'good' and engaging.
Think of it like cover bands. They don't play it exactly the way the original band does - they adapt it to their own style. So while the original work is 'done', there is still a lot more work to do.
Think of it like cover bands. They don't play it exactly the way the original band does - they adapt it to their own style. So while the original work is 'done', there is still a lot more work to do.