Statistical Power Problem

[bolson]

Greetings, I have a dilemma I am hoping list serve members can assist me with.  I am doing a program evaluation where in the program was given in 4 schools to all 6th graders then a booster of that program was given to all 7thg graders the following year (same kids basically). I also have 4 comparison schools selected based on demographic and geographic similarities b/n population served by schools.   Because the selection unit of analysis is schools and the evaluation data is collected from individual students I have what would be a two-level model. But because I have only 4 paired comparisons b/n schools I have no statistical power and cannot run HLM.  What alternative statistical analyses could be done on these data given the concern about unit of analysis and power?    Brittawni L. Olson, Ph.D. Candidate Project Director Drug Free Communities Support Project Lincoln Council on Alcoholism & Drugs, Inc. 914 L Street Lincoln NE  68508 P: 402-475-2695 F: 402-475-2699 E: [EMAIL PROTECTED]