I created folders in iphoto on my imac, synch using itunes and selected all photos from iphoto but those albums don't show up...most my albums do but a few don't!??

I have a new iMac and I'm a new mac user....I have an iphone5..and ipad2.

I have created folders on the imac in iphoto.

I am synching the ipad and iphone with mac using itunes...selecting all photos, 3,500+ and although all the pictures may be sharing on all devices, the folders aren't.

I have created several folders and copied pictures into those folders and they look fine while in iphoto....but I can't get the to synch into ipad and iphone using itunes.