In learning the second language, motivation is always regarded as one of the vital elements. Motivation drives human to determine how to react to certain situation and to behave. This present quantitative study adapted Dornyei’s L2 Motivation Self System (L2MMS) to determine the type of motivation among selected school students in Seremban, to study the different types of motivation based on gender and to analyse the correlation between all types of motivation and students’ achievement in English Language achievement among 30 students selected randomly from schools in Seremban district. The study found that the L2 Learning Experience is the type of motivation among the students followed by Ideal L2 Self and Ought-to L2 Self. The study also revealed that both male and female students scored the highest level of Ideal L2 Self motivation, a moderate level of ought-to self motivation and the lowest level of L2 learning experience type of motivation respectively. It was also found that there was a positive correlation between the Ideal L2 Self type of motivation and students’ achievement in the English Language. However, there was no correlation between the L2 learning experience and ought-to self types of motivation and students’ achievement.