He was a professor at Tennessee State University for 28 years, serving as the dean of the graduate school, heading the biology department, and directing the science division.

[2] His older sister Geneva also attended Iowa State and they both lived at the home of Nancy and Archie Martin.

[6] In 1931, not long after he had taken a job as a professor at Kentucky State College, Crouch traveled to New York City to attend the third annual National Association for Research in Science Teaching meeting.

He was inspired to create a group to address various issues he saw within the science curriculums at historically Black colleges and universities (HBCUs), such as intellectual isolation between institutions; lack of resources and funding; and heavy teaching loads for science faculty.

[7] Crouch had previously founded another organization, the Council of Science Teachers, within the Kentucky Negro Educational Association (KNEA).

[7] Four years later, in 1943, he joined other educators from HBCUs to form an organization for Black scientists and they presented their proposal at the Conference of the Presidents of Negro Land-Grant Colleges in 1943.

The National Association of Science Teachers in Negro Colleges and Affiliated Institutions was established on October 26, 1943, with Crouch as the executive secretary.

[1] Crouch's colleagues and friends recalled him as being "insatiably curious, strong-willed, determined, and possessing a sense of humor.