The correct answer to this open question is the following.
You did not include any context, references, or text. The question is so ambiguous. So we are going to answer it in general terms.
Scholarly articles accessibility and effectiveness are a must in the class environment because they allow the student to have proper access to books, magazines, articles, and other important sources needed to do research and improve the level and quality of learning.
However, not all schools and countries have this access. There are places in the US and other countries where some schools do not have the quality resources to work with these tools, limiting the process of teaching and learning.