Differences in socioeconomic status have long been one of the major contributing factors to household educational investment, which is also a key concern in related research. Utilizing Panel Study of Family Dynamics (PSFD) datasets from 2003 to 2004, in this study we examine family investment in children's education in southeast China and Taiwan, two core economic players in east Asia, with mainland China presenting much more social inequality than Taiwan, based on Gini coefficient measures. Our findings reveal that the different levels of parental investment in education are consistent with socioeconomic disparities, which vary significantly both quantitatively and qualitatively among mainland Chinese families from diverse social class backgrounds, but this gap appears to be narrowing among households in Taiwan. Parents' level of education and income, deemed as the main class-based indicators, continue to be the determining factors in how families obtain and construct educational access, resources and opportunities for their offspring.