We define our own “eDivide index”, a measurement of IT accessibility, composed of 50% IT skills score and 50% physical and digital access score. The scores follow a normal distribution, and the mean score of American students is 34, while the mean score of Vietnamese students is 30.5. Although the mean score of Vietnamese students are slightly less, this difference is not statistically significant (two sample t-test, p = 0.47). So in terms of our IT accessibility index, on average there is no difference between students of the two countries, although American students appear to be slightly better off than their Vietnamese cohort.

The eDivide index is composed of 50% IT skills score and 50% physical and digital access score. The maximum score possible is 70.

• IT skills score: this is based on the activities the student does on computers at school in the last semester, which is measured by question 8 in the questionnaire

• Each activity which does not require the student to produce something of their own gives a score of 1 point. These activities are: playing games and using simulations
• Activities which require heavier computer knowledge are scored as 3 points. These activities are: gathering data electronically, using a database, using a desktop publish program, editing or making a graphic, editing a video, or writing a computer program.
• Other activities give a score of 2.
• The total IT skills score is the sum of score for all activities that the student answered "yes" to. The maximum score possible is 34

• Physical and Digital access score: this is based on questions 3, 4, 5, 6, 7, 9 and 20 of the questionnaire

• The score of each question correspond to each answer. (for example, having 2 computers at home give a score of 2).
• For the "how often" questions, "daily" gives a score of 3, "weekly" is 2, "monthly' is 1, and "never" is 0.
• The total score is the sum of all scores. The maximum score possible is 18. To balance it with the IT skills score, this score is doubled. Therefore, the maximum score possible for this section is 36.