And I think you ought to look at the context too, in which Jesus was speaking starting from verse 1 and going on to v12. Here Jesus is telling His disciples to obey the pharisees in the Law, but not to act like them because "Everything they do is done for men to see" and "they love to be greeted in the marketplaces and to have men call them 'Rabbi.'".
Jesus is warning the disciples not to get proud in their positions, but to stay humble; because having people refer to you by a title can blow yor ego up a bit too much.
"The greatest among you will be your servant. For whoever exalts himself will be humbled, and whoever humbles himself will be exalted."
Yes, I did read that. But the message still remains, we have only one Father and only one Teacher.
So you won't listen to anyone else who teaches you about Scriptures? Despite Ephesians telling us that some are teachers?
Nope.