The Vulcan Science Academy also spent a deal of time studying sub-quantum transporting but had little success. Earth's expert on transporters, Emory Erickson, had been trying to get his hands on some of the Science Academy's research for years to no avail, but later claimed that it was probably just as well, as it might have sent him down the wrong path. (ENT: "Daedalus")
In 2249, Spock decided to join Starfleet rather than attend the Vulcan Science Academy, against the wishes of his father, Sarek. His decision was motivated by the realization that he would never be seen as an equal by the staff, only as someone who had "overcome the handicap" of half-Human parentage. In the alternate reality, Spock likewise declined an invitation to study at the Vulcan Science Academy. (TOS: "Journey to Babel"; Star Trek)
The script of the filmStar Trek made it clear that, prior to Spock's rejection of admittance into the Vulcan Science Academy, they had never had a half-Human pupil.