Over the years, the TRIO Programs have been expanded and improved to provide a wider range of services and to reach more students who need assistance. The Higher Education Amendments of 1972 added the fourth program to the TRIO group by authorizing the Educational Opportunity Centers. The 1976 Education Amendments authorized the Training Program for Federal TRIO Programs, initially known as the Training Program for Special Programs Staff and Leadership Personnel. Amendments in 1986 added the sixth program, the Ronald E. McNair Postbaccalaureate Achievement Program. Additionally, in 1990, the Department created the Upward Bound Math/Science program to address the need for specific instruction in the fields of math and science. The Upward Bound Math/Science program is administered under the same regulations as the regular Upward Bound program, but it must be applied for separately. The Higher Education Amendments of 1998 authorized the TRIO Dissemination Partnership program to encourage the replication of successful practices of TRIO programs. Finally, the Omnibus Consolidated Appropriations Act of 2001 amended the Student Support Services (SSS) program to permit the use of program funds for direct financial assistance (Grant Aid) for current SSS participants who are receiving Federal Pell Grants.
The legislative requirements for all Federal TRIO Programs can be found in the Higher Education Act of 1965, Title IV, Part A, Subpart 2. The requirements for the SSS Grant Aid can be found in Public Law 106-554.