It's not only supporting education where Apple has significantly improved life and communication for many deaf people. In the old days deaf people had to always carry a notepad and pen or pencil in order to write a note to a hearing person who didn't know sign language, and even at that, communication was awkward. Now, with the iPhone and other smartphones a deaf person can quickly convey what they need to a hearing person and the hearing person can also use their own iPhone to text back or use Notes, whichever works easier. Sometimes a picture is worth 1000 words, as the saying goes, and again the iPhone makes it easy to pull up a photo and show that to someone.
A deaf person who is running late for an appointment or gathering can now easily and quickly text someone to let them know that they will be late..... In the past that was really not possible.
Apple has always been on top of things with regard to accessibility issues, and another way in which they have benefitted the hearing-impaired community is by providing connectivity with current hearing aids, cochlear implant sound processors and bone-anchored sound processors.
Kudos to the students at Gallaudet who wanted Tim Cook to come and connect with them at their graduation! Kudos to Tim Cook for doing just that.