Child Care Investment Act of 2008

Child Care Investment Act of 2008 - Amends part A (Temporary Assistance for Needy Families) of title IV of the Social Security Act to increase appropriations for child care assistance grants for FY2009-FY2014.

Makes appropriations for FY2009-FY2014 for grants to states to establish: (1) a Quality Rating and Improvement System (or maintain such a system) for center-based child care providers, group home child care providers, family child care providers, and other early childhood education providers; (2) a statewide network of infant and toddler specialists to train such providers; (3) standards that require at least 40 hours of appropriate health, safety, and child development training for an individual before employment with or as a licensed or registered child care provider; and (4) requirements that licensed or registered providers are visited by monitoring staff at least twice a year.

Requires the use of such appropriations also to pay reimbursement rates at or above the 75th percentile of market rates for providers of child care services assisted under the Child Care and Development Block Grant Act of 1990.