When importing students with accented characters in their name, you may see that the accented characters do no display correctly. For example, 'Rafael João Luís Pires', Would be changed to 'Rafael Jo?o Lu?s Pires'. To fix this you must save the CSV file using the Unicode encoding standard and then reimport the CSV file. The option to save a file in 'Unicode' is located on the Windows 'save' dialog box when saving from an application like Notepad or one that supports changing the encoding.
To do this click 'File' then 'Save' making sure that the 'This PC' option is selected then below the name there is a menu, select 'Unicode Text' from this and then click 'Save'.