Most difficult secondary admission to or weed-out from major

What programs have the most difficult secondary admission to or weed-out from major?

For “most difficult secondary admission”, this would only be for programs where secondary admission is the usual route into the major (as opposed to direct admission which leaves little or no space for students changing into the major later).

Examples:

Difficult secondary admission:

Weed-out from major:

While transfers I can understand a high bar, weed out from majors I would avoid that school like the plague. Just additional stress on a kid, and they wouldn’t make any more then a nursing grad from Northern Arizona. Imagine getting a 3.4 one semester and being booted. :grimacing: