Does A Quran Teacher Have To Make Ablution?
When he instructs his students how to recite the Mushaf, does a teacher have to have ablution or is purity not a condition in such case?
Here, a teacher is like everyone else; he cannot touch the Mushaf unless he is in a state of purity according to the view of the majority of the scholars, as well as the Four Imams, may Allaah have mercy upon them. This is because of the Hadiths of Amr bin Hazm in wich the Prophet said: None touches the Qurýan except the pure.  This is a Hadith with a good chain of narration, recorded by Abu Dawud and others, in both connected form as well as Mursal  form. There are many routes for it that support its authenticity in connected form, and it was according to this that the Companions of the Prophet judged, may Allaah be pleased with them. And with Allaah is the facilitation to do what is correct.
 Ibn Hibban no. 793 and Ad-Daraqutni no. 433.  A connected chain of narration reaching a Companion, or someone else who lived after the Prophet.
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah Vol. 7 Page 46