After CAS PS 231
Gateway: CAS PS 231
Building the department map…
Department paths
Courses with no prerequisites inside the department that unlock the most downstream work.
The shortest canonical route from each entry point to a gateway course.
Generated from Boston University’s catalog, prerequisite, and concentration data. Spotted an error? Departments can adjust labels, ordering, and notes without a code change, so contact us.
Each of these unlocks the largest share of downstream work on this map. Courses from other departments can appear here when they genuinely gate CAS PS coursework.
Intro tiers at the top, advanced work below; arrows point from a prerequisite to the course it unlocks. Courses from other departments appear where they gate CAS PS work. Click any course to see what it requires and unlocks without leaving this page; hovering lights up its neighbors. The lists on this page carry the same courses in text form.
Showing the 25 CAS PS and feeder courses that have prerequisite links. 20 more CAS PS courses have no recorded prerequisites. They are listed under Tracks below, not drawn as loose dots here.
Upper-level clusters, grouped by the gateway that opens them.
The deepest prerequisite chains in CAS PS. These are the routes that take the most semesters to climb.
4 courses deep, ending at CAS PS 328
4 courses deep, ending at CAS PS 337
3 courses deep, ending at CAS PS 323
3 courses deep, ending at CAS PS 327
All CAS PS courses in the BU catalog
Grade medians are for verified students. Sign in with your school email to see them.
Use your school emailNo section schedule with instructor names for CAS PS yet.
No clubs or organizations on record under CAS PS yet.
This shows once five students share their club memberships.
CAS PS does not run a page here yet. When it does, its events show up here and on the BU campus feed.