Measure the effects
When you sign a contract with an advertising agency, you want to measure the effects of its work. You want to know what you pay for. This is absolutely normal and does not surprise anyone. So why not measure the effects of learning English? After all, you want to pay for the development of your employees' competences, which will probably translate into the efficiency of your company at some point. You have the right to know where you are at. Find out how you can monitor the progress of your team.