The model minority concept can also affect Asians' public education. By comparison with other minorities, Asians often achieve higher test scores and grades compared to other Americans. Stereotyping Asian American as over-achievers can lead to harm if school officials or peers expect all to perform higher than average.</ref> The very high educational attainments of Asian Americans has often been noted; in 1980, for example, 74% of Chinese Americans, 62% of Japanese Americans, and 55% of Korean Americans aged 20–21 were in college, compared to only a third of the whites. The disparity at postgraduate levels is even greater, and the differential is especially notable in fields making heavy use of mathematics. By 2000, a plurality of undergraduates at such elite public California schools as UC Berkeley and UCLA, which are obligated by law to not consider race as a factor in admission, were Asian American. The pattern is rooted in the pre-World War II era. Native-born Chinese and Japanese Americans reached educational parity with majority whites in the early decades of the 20th century. One group of writers who discuss the "model minority" stereotype, have taken to attaching the term "myth" after "model minority," thus encouraging discourse regarding how the concept and stereotype is harmful to Asian American communities and ethnic groups.