Which is more important?

<p>Do schools (specifically Penn) look more at cumulative GPA or junior/senior year. My freshman and sophomore years I had a cumulative GPA of about a 3.71, but now as a junior I'm getting a 4.0 and hopefully a 4.13 next semester. Will my improvement look good, or will these earlier years only weight me down?</p>

<p>of course having a higher gpa all 4 years is the best :P but an upward trend is also very good (probably the next best thing lol)</p>