InsaneJournal

The Ministry Access Grades are grades of clearance access for each Ministry Personnel of the London Ministry of Magic. Access Grades range from Grade 1 to Grade 6. The higher your grade number, the more access you have to Ministry information, confidential files, etc. Below is a brief categorization of Clearance.

GRADE 6

Minister for Magic
Senior Undersecretary to the Minister
Junior Assistant to the Minister
Head of the Department of Mysteries
Head of Auror Headquarters

GRADE 5

Wizengamot
Unspeakables
Heads of Departments
Head of Muggle-Worthy Excuse Committee
Head of International Magical Office of Law
Wizards in the British Seats of the International Confederation of Wizards

GRADE 4

Improper Use of Magic Office
Aurors
Hit Wizards
Obliviators
Portkey Office
Accidental Magic Reversal Squad
Muggle-Worthy Excuse Committee
Goblin Liaison Office

GRADE 3

Beast, Being and Spirit Divisions
Pest Advisory Bureau
Ghoul Task Force
Floo Network Authority
Broom Regulatory Control
Apparation Test Center

GRADE 2

British and Irish Quidditch League Headquarters
Ludicrous Patents Office
Ministry Security Patrol

GRADE 1

Official Gobstones Club

Thanks to __patches for this information.