History of Advanced Placement

Advanced Placement is a Portal-era triumph with a single objective: complete 3 activities on Advanced difficulty.

== How to complete ==

Open the Portal and choose any activity that supports difficulty selection, such as a Fireteam Ops strike or a Solo Ops mission.

Press Customize and set base difficulty to Advanced.

Complete three of them. Progress shows as Activities completed (0/3).

== Tips ==

• Solo Ops missions are 5-10 minutes each, the fastest way to rack up three clears.
• The Crucible does not support these modifiers.
• Advanced is baseline grade B+ and sits above Normal. It is the easiest tier that counts.

I could not confirm whether higher difficulties also count; Advanced is the safe choice.