Here is a starter kit your student can use, loaded with all country flags and names in a CSV table.
A sample flag is loaded at startup, just to show the assets work.
I left off the selection options.
If your student hard coded country names and flag files in blocks, he is doing it wrong.
flags.aia (1.4 MB)
countries.csv (17.2 KB)
For good measure, here are introductory list articles: