An Apple-equipped US education initiative in which 1,800 students in a school district have been issued iBooks is encountering teething problems.

It seems the initiative in the Quaker Valley School District has seen equipment malfunctions, and performance is also affected when students "forget" to bring their notebooks to school.

A report by research group Rand found that the equipment helped teachers track student progress, but problems described above have affected teaching time, says Associated Press.

It observes that in some classes over 50 per cent of students "did not have their laptop available in a class on a given day when students were specifically working on a technology-based project."

However, some students are happy to use the technology: "I use the computer every day," one student said. "I owe the district and the state a great deal".

Despite such obstacles school officials plan to continue the $4.1 million initiative.