The phrase 'the Quran is the mother of all books' is actually a mish-mash of opinion and actual teachings of Islam.
When used as an opinion in relation to education, it can mean that the user believes all education and all other works stem from the Quran. This is not an uncommon belief where religious texts are concerned.
The actual expression in the teachings of Islam is not 'the Quran is the mother of all books' but 'Mother of the book' or Umm-ul-Kitab. This does not refer to the Quran, but the master source for all scriptures.
It's believed that the 'Mother of the book' is in God's presence and He chooses which information is put out in revelations and other religious texts, as shown by this quote from the Quran:
“God eliminates what He wills and confirms what He pleases: With Him is the Mother of the Book"
The future of the Quran in educationThis TEDx Talk focuses on how the Quran can be used along side other educational methods in a positive way, and the possibilities of using verses of the Quran in teaching to directly relate to every day problems.