Dive Summary:

• iPads are becoming a standard instructional tool in some Michigan schools, with students designing chess pieces, checking out electronic books from the school library and watching recorded lectures.
• Schools are paying for the technology with bond funds, as well as grants and budgets typically earmarked for textbooks and supplies.
• Supplies vary: One district gives each student in grades 6 to 12 an iPad to take home, while younger students  have sets of iPads to share in the classroom.

From the article:

... Worldwide, about 10 million iPads are used in schools, according to Apple. By 2014, all 655,000 students in the Los Angeles Unified School District will have an iPad. ...