A federal department with less power than its name suggests
The US Department of Education administers funds and enforces civil-rights law; it does not set curriculum.

What the department actually does
The US Department of Education is a cabinet agency, created by Congress in 1979 and opened for business in 1980, but its authority is narrower than its name implies. The Constitution makes no mention of education, and the Tenth Amendment leaves to the states any power not explicitly granted to the federal government. That structural fact has governed the department since its first day.
What the department does control is substantial enough in its own terms. It administers roughly seven to eight percent of total K–12 spending nationwide — a minority share, but a meaningful one, because it is targeted. Title I of the Elementary and Secondary Education Act channels funds toward schools serving high concentrations of low-income students; Individuals with Disabilities Education Act money flows through the department's Office of Special Education Programs. Both streams come with conditions, and monitoring compliance with those conditions is a core function.

The second major function is civil-rights enforcement. The Office for Civil Rights, housed within the department, investigates complaints under Title VI, Title IX, and Section 504 of the Rehabilitation Act. It does not prosecute — it refers cases to the Department of Justice and, more commonly, negotiates resolution agreements. But its investigative reach across schools and colleges is real, and its letters of finding carry legal weight.
What the department cannot do is mandate curriculum, hire or fire teachers, or set graduation requirements. Those powers sit with the fifty state education agencies and the roughly thirteen thousand local school districts they oversee. When No Child Left Behind required annual testing, it specified testing without specifying what was to be taught — the federal government could measure outputs but not control inputs. The Every Student Succeeds Act of 2015 pushed accountability decisions further back toward the states still, explicitly prohibiting the Secretary of Education from directing state standards.
The department's budget, staffing, and civil-rights reach make it consequential. Its constitutional position keeps it, at most, a funder and a referee.
| Funds administered | Title I, IDEA, Pell Grants (higher ed): yes |
| Civil-rights investigations and resolution agreements: yes | |
| Curriculum, standards, graduation requirements: no | state and district authority |
| Hiring and firing of teachers or principals: no | district authority |