What tests do they use at the National Championships? Are there special tests for each level that are sent to the riders when they qualify, or do they set one test from the existing suite of tests at that level?
As Sarah_Jane said they are normal tests that you can get at any show. Usually the open section will have a more difficult test than the restricted.
They are as follows:-
Prelim 17
Novice Restricted N22
Novice Open N37
Elementary Restricted E53
Elementary Open E58
Medium Restricted M61
Medium Open M75
Advanced Medium AM98
PSG
Inter 1
Inter 2
Grand Prix.