Since its inception in 1997, TNTP has recruited or trained approximately 43,000 teachers - mainly through its Teaching Fellows programs - who have taught an estimated 7 million students.

[8] In a New York Daily News opinion piece, Timothy Daly, President of TNTP, advocated for "making student test scores one of many factors in the tenure decision.

During its first 10 years, TNTP initially focused on helping urban districts improve the way they recruited, trained, and hired new teachers.

In the year 2000, TNTP began the Teaching Fellows and Academy programs, which served as alternate routes to teacher certification for high-need schools.

Today, TNTP also works with states and district public schools in the areas of measurement and management of teachers’ performance.

[10] It also began identifying policies counterproductive to overcoming these challenges and publishing reports to offer solutions and encourage reform.

The majority of its revenue comes from contracts with districts and states to supply services; additional funding for new program development and research is provided by donors such as the Bill & Melinda Gates Foundation.

Upon The Irreplaceables’ release, U.S. Secretary of Education Arne Duncan publicly supported TNTP’s findings [18] and the National Education Association (NEA) praised the report, noting that TNTP had “helped focus attention on one of our nation’s most valuable assets: the dedicated professionals who educate our children.” [19] 2008 data from Louisiana showed “that TNTP teachers outperform beginning and experienced teachers in math, reading, and language arts.”[20] In 2010, a state-sponsored study assessed the effectiveness of newly certified teachers in Louisiana.