Personal Learning Theory refers to the belief system each learner has toward his/her own learning activities. The major purpose of the present study was to clarify the characteristics of the PLT by administering a questionnaire to two hundred and twenty-one high school students. The questionnaire consisted of twenty-eight paired items concerning students' daily learning. Five factors were extracted by means of a factor analysis. The tendencies of English learning among Japanese students were: 1) cramming, 2) running exercises quickly when facing a difficult problem, 3) keeping one's own pace, 4) flexibly changing one's plans and/or methods, and 5) seeing one's friends as rivals. The author applied the data pattern analysis, or the profile analysis, in order to make the results understandable. The typical patterns, found most frequently among the subjects, were where they cram, run exercises quickly when facing a difficult problem, and keep their own paces in learning English.