The money, which was allocated by Congress, helps pay for after-school programs, support for students learning English and other services. The administration offered little explanation, saying only that the funds were under review. It gave no timeline for when, or if, the money would be released, saying instead that it was “committed to ensuring taxpayer resources are spent in accordance with the president’s priorities.” “It’s catastrophic,” said Jodi Grant, executive director of the Afterschool Alliance, a group that works to expand after-school services for students. She estimated that the federal dollars for after-school and summer-school programs — about $1.3 billion annually — support 1.4 million students, mostly lower income, representing about 20 percent of all students in after-school programs nationally.