To assist States in making voluntary high quality full-day prekindergarten programs available and economically affordable for the families of all children for at least 1 year preceding kindergarten.

Prepare All Kids Act of 2007 - Amends the Omnibus Budget Reconciliation Act of 1981 to direct the Secretary of Health and Human Services to establish a Prekindergarten Incentive Fund from which matching grants shall be awarded to states and, through them, subgrants to qualified prekindergarten providers to establish, expand, or enhance voluntary high quality full-day prekindergarten programs...