Table 1. Sample Size of the Evaluation of the Effectiveness of Reading and Mathematics Software Products
| Subject and Grade Level | Number of Districts |
Number of Schools |
Number of Teachersa |
Number of Studentsb |
|---|---|---|---|---|
| Reading (Grade 1) | 14 | 46 | 169 | 2,619 |
| Reading (Grade 4) | 11 | 43 | 118 | 2,265 |
| Math (Grade 6) | 10 | 28 | 81 | 3,136 |
| Math (Algebra) | 10 | 23 | 71 | 1,404 |
| Total | 45 | 140 | 439 | 9,424 |
| Unduplicated Totalc | 33 | 132 | 439 | n.a. |
|
n.a. = not applicable. a The number of teachers includes the treatment and control teachers. b The number represents students in the analysis sample who were tested in fall 2004 and in spring 2005. The total number of students who were tested at either point in time is larger because some students tested in the fall moved out of their school district by the time of the spring test and some students tested in the spring had moved into study classrooms after the fall test. The total number of students tested was 10,659 in the fall and 9,792 in the spring. c Because nine districts and eight schools are piloting more than one product for the study, the unduplicated total gives the number of unique districts and schools in the study. |
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