The County Board of Supervisors on Tuesday appointed Corina Villaraigosa, wife of Mayor Antonio Villaraigosa, to the First 5 LA commission.
She will help oversee planning for early childhood development, health and education programs throughout the county.
Villaraigosa, a teacher, will take her place Thursday on the 13-member panel.
The commission manages an annual budget of $209 million.
She was nominated by the commission's chairwoman, Supervisor Gloria Molina.