This research compares the English language achievements of vocational students, their reading and writing abilities, and their attitudes towards learning English taught with just-in-time teaching techniques through web technologies and conventional methods. The experimental and control groups were formed, a randomized true control group pre-test-post-test design was used, and the data were analyzed by t-tests for dependent and independent samples. The study's results showed significant differences in English writing ability and attitudes toward learning English between both groups at a 0.01 confidence level, and in reading ability at a 0.05 confidence level.