Preschool education, according to Magnuson, Meyers, Ruhm and Waldfogel (2004), refers to an educational program offered by kindergartens and daycare centers, which is offered during the first years of childhood, between 2 and 6 years old, and ending with entry into primary school. Most parents in the society may believe that the early childhood education program can improve the academic performance of learners, especially in reading and writing, while others may oppose it, believing that Early childhood education program can discourage children's mental development in different areas like cognitive development. , emotional and behavioral controls (Barnett, 2008). Despite improving language skills, mental development may be more important than academic achievement since psychological growth can affect learners' entire lives. A learner may be harmed by disadvantages such as a weakening of cognitive development like creativity and imagination during the early education plan. This essay aims to study the disadvantages of preschool education program by analyzing preschool education and then mentioning the advantages and disadvantages such as literary abilities and mental maturity, respectively. This essay will end with a brief conclusion that preschool education can have negative consequences on young learners. The most important reason why parents would force their children to receive preschool education may be to improve academic performance in children's later studies, especially in reading and writing skills (Heckman, 2011). Barnett (2001) states that early childhood education curriculum is strongly associated with reading and writing skills, which improves language skills for the future...... middle of article...... International Journal of Early Years Education, 16 (3), 223-236.9. Kamii, C. and DeVries, R. (1993). Physical knowledge in preschool education: implications of Piaget's theory. Teachers College Press.10. Kong, L. (2005). The sociality of cultural industries: cultural policy and the Hong Kong film industry. International Journal of Cultural Policy, 11(1), 61-76.11. Locke, A., Ginsborg, J. and Peers, I. (2002). Development and disadvantage: Implications for the early years and beyond. International Journal of Language and Communication Disorders, 37(1), 3-15.12. Magnuson, KA, Meyers, MK, Ruhm, CJ, & Waldfogel, J. (2004). Inequalities in early childhood education and school readiness. American Journal of Educational Research, 41(1), 115-157.13. Rao, N. and Koong, M. (2000). Improving early childhood education in Hong Kong.International Early Childhood Journal, 32(2), 1-11.