I did this in 5th grade and my sister is doing it now. Only benefits where a...
1) Free Lunch.
2) T-Shirt that gave a discount at someplace.
3) We got to see police stuff.
4) Waste of class?
It didn't help one bit, but even before D.A.R.E. I was never planning to do drugs. I don think DARE does anything, it's the community you live with that influences you.
BTW our district got bombed and now DARE can't do nothing with money. =/