Not to me. The first image looks like a monkey evolving into a man. I'm no artist, but from reading the article, the Band Director seems to admit it.
If I try very hard, I can see their side. Separation of church and state goes both ways. The Band Director couldn't lead his students in prayer at school, so he shouldn't promote evolution either. This might seem as though the school promotes evolution and doesn't support creationism. It's the school band, not an interest oriented organization that was created and lead by students like the Christian Leaders of America, the young Atheists, the GSA, whatever. Since the parents are paying for the shirts and the children in the band must wear this particular shirt, it probably added some fuel to the fire. I'm sure someone would complain if the shirt depicted creationism or the rising of Christ.
It's odd though b/c most Christians believe in evolution to some degree, but that GOD had a hand in it. I guess these parents must think evolution=atheism and creationism=Christian (I'm guessing. Who knows what brought the complaint. Could've been a non-religious person or could've involved any religion not nec Christianity). Sometimes a shirt is just a shirt!
Interestingly, judging from the article, the students didn't seem to care. And, many Christian parents think the complaints were ridiculous too. Really, the principal should've stood her ground.