When students participate in coding and robotics activities, they’re learning employability skills such as teamwork and collaboration, problem solving, the ability to fail and persevere, and more.

If they won't show you any code samples, then that doesn't have to be a red flag, but it is wise to both ask why they won't share (quite likely, they simply can't for legal reasons), as well as ...

When students participate in coding and robotics activities, they’re learning employability skills such as teamwork and collaboration, problem solving, the ability to fail and persevere, and more.