Apple's plan of completely penetrating the education sector with its iPad tablets is slowly failing, according to Nasdaq.

In 2012, the company introduced the tablets as digital textbooks as an attempt to revolutionize the students' study methods in schools.

Since then, more and more schools have been equipped with tablets as part of the students' educational tools.

However, the company has faced several drawbacks after the introduction of its school-issued iPads.

Recently, the Los Angeles Unified School District suspended its program to supply Apple's tablets to students and teachers. As part of the program, Apple supplies the devices while the educational company Pearson takes care of the iPad's electronic curriculum, Business Week reported.

The program's suspension was carried out after it was uncovered that the terms of the implementation process and bidding procedure was more favorable for Apple and Pearson rather than the school district.

Another hurdle for the Cupertino-based company came in the form of students learning how to bypass the iPad's content restrictions. As a result, many of them were able to use the devices for non-educational purposes.

For instance, a mother in Oregon was shocked after learning that her 12-year-old daughter was reading online erotic stories through her school-supplied iPad, according to KATU.

Although the schools impose restrictions to make sure non-educational sites are blocked, students are still able to search the Internet and visit inappropriate websites.

In the case of the girl from Oregon, she and her classmates were able to access erotic stories through the site Wattpad, an online writing community where users their own stories.

Lastly, industry experts are beginning to consider Google's Chromebooks as a potential replacement for Apple's iPad in schools. Since iPads are used by majority of consumers as gaming devices, the Chromebook is more appropriate for academic and work activities due to its keyboard feature.

In addition, Google has more educational apps than Apple that encourages collaboration and teamwork among students.