I don't know how to unlock marleybone! :( How and what do you have to do to get permission to go to marly bone? when I got to lv. 25 the Headmaster said to come quickly and that something had arrived for me and I got there in like, 23 seconds and I talked to him and he DIDN'T DO ANYTHING!!!! He just told me what he tells every other wizard he doesn't have a quest for.
Young Wizard, your entrance to Marleybone is not determined by your level. You will be unable to progress to Marleybone until you have completed all your required assignments in Krokotopia. Keep working on the quests you already have in your Quest Journal, and you'll be in Marleybone before you know it!