Apple officially unveiled its entrance into textbooks with the new “iBooks 2” app and “iBooks Author” e-book authoring tool. If you are wondering just how much the textbooks are going to cost you, Apple announced that initially high school textbooks through partners Pearson, McGraw Hill, and Houghton Mifflin Harcourt will be available through the new iBookstore textbooks category for $14.99 or less. Compare that figure to textbooks from publishers like McGraw Hill that can sell for as high as $75. Apple noted that the three partners announced today currently produce 90 percent of the textbooks available.

In terms of what will be available starting today, McGraw Hill released the following books currently used by over 3 million students worldwide: “Algebra 1,” “Biology,” “Chemistry,” “Geometry,” and “Physics.” Pearson will release “Algebra 1,” “Biology,” “Environmental Science,” and “Geometry” (only two available today), with math books to be released in the future. Pearson’s books are currently used by an estimated 4 millions students worldwide.

Apart from the three major textbook publishers, Apple will work with DK Publishing who is releasing four new books aimed at younger children on the iBookstore today. Those include: “Dinosaurs and Prehistoric life,” “Natural History Insects,” “Natural History Animals,” and “My First ABC.”

Check out our full coverage of Apple’s education event and additional assets:

ARTICLE – Liveblog: Apple’s education-focuse media event in NYC ARTICLE – Update on business metrics from Apple’s education event ARTICLE – Apple releases iBooks 2, a brand new textbook experience for iPad ARTICLE – Apple to price new iBook textbooks at $14.99 or less ARTICLE – Apple announces iBooks Author, free Mac app for authoring textbooks ARTICLE – Apple launches iTunes U, free iOS app for educators to take courses anywhere ARTICLE – Apple releases iTunes 10.5.3 with support for textbook syncing to iPad ARTICLEHeartwarming clip of teachers and students Apple played at the presser ARTICLEAn overview of publishing and distribution for iBooks Author VIDEO – Gallery of elements that can be used for interactive iBooks VIDEOThe iBooks Textbooks promo PR – Apple reinvents textbooks with iBooks 2 for iPad PR – Apple unveils all-new iTunes U app for iPad, iPhone & iPod touch SUPPORT – iBooks Author: Best practices for using 3D models SUPPORT – iBooks Author: Use iPad-safe fonts when authoring books SUPPORT – iBooks Author – How to make your iBooks accessible SUPPORT – iBooks Author – Add video to your iBooks SUPPORT – iBooks Author – Publishing and distribution FAQ CHANGELOGiTunes 10.5.3 for Mac CHANGELOG – iTunes 10.5.3 for Windows (64 bit) APP STOREiBooks Textbooks section in iTunes APP STOREiTunes U for iPhone, iPod touch and iPad APP STOREiBooks 2 for iPhone, iPod touch and iPad APP STOREiBooks Author for Mac