The iBooks textbooks are available only on iPads, whereas other iBooks are available on iPhones and iPod Touches.

WSJ: Apple Makes Push Into iPad Textbooks

Reitzes also noted that iPads and iBooks textbooks will be an easier sell to college students who will benefit more from the cost savings over traditional textbooks.

FORBES: How Will Teachers Pay For Apple's New iBooks? Sites Like DonorsChoose.Org

But Reitzes added that the new iBooks 2 textbooks could also help Apple attract public funds for iPad purchases.

FORBES: How Will Teachers Pay For Apple's New iBooks? Sites Like DonorsChoose.Org