Scratch is far better and deeper than most people think. It's also interesting because the developer interface forces thinking for yourself on things like how to manage complexity in your project, or how to get different modules to communicate - and that's useful (if only helpers thought to point that out). It's very unlikely the school is digging deep in Scratch. Most likely they are keeping to the very basics - and…
Check out https://pytch.org/ which is a great way for kids (or anyone) to transition from Scratch to Python. Built by a friend of mine.