How did we obtain from a chart like this that the highest number of students lies in Italy? I am seeing that all 3 countries occupy the same exact space, only with a change in the city division.

Possibly the number referred here are Tourist students.

If there is and admin that would like to correct me please feel free to do so. I believe that the narrator made an error when talking about student as the chart they have in the video reflects data on tourists, not students. Furthermore the reason the chart we have produced is different is because the data in the source table in the video differs to the resource document provided.