1)  The number of classroom computers is not included in this measure. Instead, the measure reflects the level of facilities support for the computers which the teacher does have.

2) The Education Week survey, however, had under a 10% response rate.

3)  Calculation: The schools that reported student support in at least one area averaged about 9 to 10 student workers in total across the four areas. If each student worked 4 to 5 hours per week, that is slightly more than 1 FTE of time.

4)  School characteristics include school level (elementary, middle, high schools), school control (public or private) and SES (based on income level of zip code location of school). See the appendix for more details.

5)  This ratio was calculated at the school level and then weighted by the number of teachers.

6)  This ratio was calculated at the school level and then weighted by the number of teachers.

7)   Effect sizes were calculated by subtracting the mean score of teachers' subjective ratings when the quality index component was not present from when it was present. The difference was then divided by a weighted average standard deviation of the two groups.

8)  It is important to note that change is based on one measure of teachers' perceptions of change (see appendix), rather than the difference between ratings at two different time periods. Thus, the results should be interpreted with this in mind.