The US federal government provides low interest loans and grants (such as Pell grants) to low income students for community college, university, technical college, and graduate school. Other programs include Federal Work Study (FWS), which provides students with part-time jobs and the American Opportunity Tax Credit (AOTC), which provides tax breaks to students under set income limits. Many of the programs not related to tax credits require a FAFSA (Free Application for Federal Stuent Aid).
Federal programs that help pre-kindergarten children (in households that meet income limits) include Early Head Start (which supports pregnant women and families with infant and toddlers) and Head Start (which services kids 3-5), which funds services such as meals, parental coaching, and health services.
Learn more:
https://usafacts.org/explainers/what-does-the-us-government-do/subagency/federal-student-aid/
source