What do the abbreviated study company terms (TPR, BR, EK...etc) mean??

[johnwandering]

Everyone here addresses them as such, but no one seems to call it by its actual name.
for a person new here, what do these abbreviations stand for??

---

Members don't see this ad.

 

[Crupen]

Those refer to different companies that provide MCAT study materials.

TPR = The Princeton Review
TBR or BR = The Berkeley Review
EK = Examkrackers