1250 in the early 1970s to 1050 by the early 1980s. Sinsheimer Reforms A series of major reforms were implemented by Chancellor Robert Sinsheimer (1977–1987) at the cost of making Santa Cruz less experimental and more conventional. In 1981, after a two-year battle, the faculty narrowly voted to give students the option of receiving grades for the first time, in lieu of Santa Cruz's traditional narrative evaluations. By the fall of 1984, 45% of Santa Cruz students were already majoring in the sciences, and that year, the campus offered computer engineering as a major for the first time (in order to take advantage of its proximity to Silicon Valley), followed by business economics a year later. In May 1985, Sinsheimer, a molecular biologist, welcomed several scientists to Santa Cruz for one of the first meetings at which the idea of a Human Genome Project was discussed. Sinsheimer got Santa Cruz involved in intercollegiate athletics for the first time as part of NCAA Division III. In 1981, he supported student athletes' preference for the sea lion as the campus mascot, but was forced to back down in 1986 when the student body voted to support the banana slug instead. By the early 1990s, the campus was still inefficient in that average teaching loads were still light compared to other UC campuses, but SAT scores had stopped falling, the faculty was performing good research, and the campus was beginning to rise in university rankings. In 1997, an engineering school was finally launched. In 2019, the University of California, Santa Cruz was elected to the Association of American Universities (AAU), the most prestigious alliance of American research universities. Along with UCI, UC Santa Cruz was the youngest university to gain admittance to the AAU. 2020 strike action On December 9, 2019, over 200 graduate student-workers initiated a wildcat strike by withholding Fall quarter grades with the following demands: (1) a COLA (cost of living adjustment) of $1,412/month to address the housing crisis in Santa Cruz, (2) a promise of non-retaliation against those participating in the strike, and (3) a cap on tuition for undergraduate students, to ensure that the increase in graduate student-worker pay would not increase the rent-burden and precarity of their students. On February 10, 2020, graduate student-workers responded to disciplinary threats from UCSC administrators with a full teaching strike. UCSC administrators' called in police from various counties to protect and