Listed below is a definition of terms used on the profiles. Multiple Studies Multiple studies refers to repeated assessments of program outcomes through annual evaluations, longitudinal investigation or multiple site assessments. Consistency of results across studies significantly increases confidence in those results. The sample size refers to the number of experimental students for whom data were gathered. An instrument is reliable if it provides consistent measurements, and it is valid if it provides accurate and relevant information.
Statistical significance is determined as part of the data analysis process.
It signifies whether or not a program has had an effect beyond which one would expect from chance alone. Outcomes Outcomes refer to the number of impact areas assessed by the program. Programs with more than one outcome are generally considered more powerful. Research data that undergo this level of review generate a greater degree of confidence in the results. Programs that document sustained or lasting effects can be considered highly effective.