Make sure all course data has been moved into the dashboard database, then archive the extension tables.
|Open||None||T106123 Extensions needing to be removed from Wikimedia wikis|
|Resolved||D3r1ck01||T125618 Deprecate and remove the EducationProgram extension from Wikimedia servers after June 30, 2018|
|Declined||None||T125619 Migrate legacy courses to dashboard|
The code for pulling data from the legacy extension bit-rotted and has been removed from the codebase, and I don't think we should plan on using the dashboard as the archive of legacy courses globally.