Test pre-requisites 4 user custom fields as follow: firstname, foo, bar, foobar User A is a teacher with capability course:viewhiddenuserfields User B is a teacher without capability course:viewhiddenuserfields Some students with custom fields filled (set firstname to something different than the user firstname) Set setting grade_export_userprofilefields to its default value, but remove 'email' and add 'password,idontexist' Set setting grade_export_customprofilefields to 'foo,bar,firstname' Set setting $CFG->hiddenuserfields to 'bar,lastname' in your config file Have a few grades on a few activities for the students Test 1 1. As user A go to the gradebook 2. Export the grades to plain text file 3. In the preview, make sure that: password, idontexist, email DO NOT appear foo, bar, lastname appear firstname appears TWICE with different values 4. Export the file, and make sure password, idontexist, email DO NOT appear foo, bar, lastname appear firstname appears TWICE with different values 5. Repeat steps exporting to XLS and ODS. Test 2 1. As user B go to the gradebook 2. Export the grades to plain text file 3. In the preview, make sure that: password, idontexist, email, lastname, bar DO NOT appear foo appears firstname appears TWICE with different values 4. Export the file, and make sure password, idontexist, email, lastname, bar DO NOT appear foo appears firstname appears TWICE with different values 5. Repeat steps exporting to XLS and ODS.