D.C.-based The Hill says that Lily Eskelsen Garcia, ex-president of the National Education Assiciation, is the leading candidate for U.S. Secretary of Education.

https://thehill.com/homenews/administration/530592-ex-teachers-union-leader-seen-as-leading-candidate-for-bidens

The Congressional Hispanic Caucus (CHC) endorsed Eskelsen García for the job earlier this month, as did several Latino advocacy groups. The 11 female members of the CHC wrote to Biden earlier this week urging him to nominate at least two Latinas to his Cabinet. Biden has yet to name a Latina to a Cabinet role...

Eskelsen García began her career in education as a cafeteria worker. She went on to work as an elementary school teacher in Utah, earning teacher of the year honors in the state in 1989. 

More recently, she led the NEA, the country’s largest union, which boasts more than 3 million members. The group backed Biden in the Democratic primary and the general election. Incoming first lady Jill Biden is also a longtime member of the NEA.

Biden is expected to name all the members of his Cabinet before Christmas, and the guessing game will end.