At Columbia, A+ can help, but a heavy B-/C-range course still moves the average fast.
Columbia's 4.33 A+ scale makes the top end different from most 4.0 calculators. Still, GPA is credit-weighted. A high-credit course below your target range usually matters more than one extra plus in a lighter course.
- Use A+ as 4.33 only when the Columbia grade is actually A+.
- Compare your result with school-specific honors and Dean's List context, not generic cutoffs.
- Professional-school services may recalculate Columbia grades using their own rules.