inquiry

You've placed consistently (adverb) between to present (infinitive verb), creating a split infinitive.  Some may argue that there isn't anything wrong with splitting infinitives, but in formal writing it's best to follow the rules.  You could change it to --

In order for ESL/EFL teachers to present grammar consistently...

Yes, it is a split infitive & should be written differently as Jody noted.  Unfortunately, it is a quote.  In order to change the quote, you need to put the changed words in brackets.  You could leave it as is and put (sic) after it - though some do argue that a split infinitive is not an error.  So rather than call attention to the grammar matter, I would find a way to get the point across without quoting that phrase. 

Your sentence has three separate quotes from the same source.  That's a lot for one sentence.  I suspect that you are pulling each quote from different sentences,and  putting them all together to summarize a larger text.  If this is academic writing, then summarizing in your own words with only one quote will show that you have a firm grasp of the topic.  Too many quotes might only show that you know how to find a  knowledgeable source.