The aim of this research was to know the defferent student s learning achievement in using contextual teaching learning (CTL) and conventional approach. The research was conducted at the Senior High School II of Padang. The population of the research was the first grade students. The samplesof the research were selected by using a puposive sampling technique. The design of the research was a pretest-posttest control group design. The data were collected by using an economic achievement test whose validity and reliability had been tested. The data were analyzed using Z-test. The result of data analysis showed that student s learning achievement using CTL was higher than of conventional approach.