I will be a junior this fall, and so far:
Calc I and II - no calculators
Calc III - calculators allowed (although their usefulness was limited - the TI89s will evaluate a triple integral but they sure won't tell you how to set it up when all you are given is a description of the region in terms of equations of planes, cones, circles, etc.)
Linear Algebra/Diff. Eq - no calculators, and for a lot of linear algebra problems they wouldn't have done much good anyway
also only one of my EE classes so far has permitted the use of calculators