Is it that different from using calculators in primary school mathematics? I'd like to say that we need to come up with a higher level task that computers can't do for assessing students but I think we'll run out of options in a few years. Better to just make it a point that, while it is possible for AI to do a student's job (in the near future), it is still important that the students learn to do what the AI can also do. Unfortunately that means using in-class tests only.