As he rose up the ranks to the top of the SNTE, she rose with him.
BBC: 'La Maestra' of Mexico faces her biggest challenge
2.
Mr Diaz told the SNTE congress in Guadalajara that the way his union had been sidelined over the recent education reforms was a crime.
BBC: Mexico union replaces Elba Esther Gordillo
3.
Ms Gordillo, who has led the SNTE for the past 23 years, and who was elected unopposed to another six-year term in October, was not present at Monday's signing ceremony.
BBC: Mexico's Pena Nieto enacts major education reform