Random intercept model and random intercept & random slope model carrying two-levels of hierarchy in the population are presented and compared with the traditional regression approach. The impact of students’ satisfaction on their grade point average (GPA) was explored with and without controlling teachers influence. The variation at level-1 can be controlled by introducing the higher levels of...

I'm sitting at a table in a Frankfurt airport waiting room, playing bridge with three high school students. Slung about my waist is a fanny pack stu ed with passports and plane tickets for eight. A cacophony of Greek buzzes about us, as tired travellers wait to board the plane to Athens. Among them is our contingent, easily distinguishedby our bright red golf shirts emblazoned with red maple le...

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