Abstract:
The purposes of this study were 1) to analyze the factor of student engagement of lower secondary school students in Bangkok and to examine the quality of the student engagement scale after analyzing the factor 2) to analyze the profile group of lower secondary school students according to the level of student engagement and 3) to analyze the correlation between GPA and student engagement score. The data were collected with lower secondary school students in Bangkok via student engagement scale, a 4-point self-report rating scale. The data were analysis by using IOC, EFA, CFA, reliability, item discrimination and analyze by using IRT 2) latent profile analysis and 3) Pearson's correlation coefficient analysis. The research finding was showed that 1) Student engagement consisted of 4 factors include relationship with family, relationship with friends, school compliance and behavioral engagement in learning. Measurement model that created after EFA was fit (X2 = 42.29; df = 29; p-value = .053; RMSEA = 0.017). The quality of the scale showed that met requirement of criteria of validity, reliability, and discrimination. 2) The student engagement model that consisted of 5 profile groups was the most fit (LL = -6360.634, BIC = -12927.260). and 3) The GPA was a high positively correlated at statistically significant level of .01 with the student engagement total score (r = .804) and all factors of student engagement (r = .707 - .771).