From FFXI Wiki

Apprentice is the fifth crafting and fishing rank. It spans from skill level 38 to skill level 50. Your rank is Apprentice till you pass the rank-up test for your guild, to reach the next rank : Journeyman.

Test items for next rank (Journeyman)

Craft Item
Alchemy Fire Sword
Bonecraft Carapace Gorget
Clothcraft Wool Bracers
Cooking Apple Pie
Fishing Monke-Onke
Goldsmithing Mythril Ring
Leathercraft Cuir Bouilli
Smithing Mythril Pick
Woodworking Rose Wand