Phase Three of the National Environmental Literacy Assessment (NELA) will analyze the relationship between middle school students' scores on the MSELS and other measured variables that may have critically impacted the development of environmental literacy in these students. Phases One and Two of the National Environmental Literacy Assessment (NELA) relied on four data collection instruments: The Middle School Environmental Literacy Survey (MSELS), the School Information Form, the Program Information Form, and the Teacher Information Form. The primary outcomes of these phases were to identify general levels of environmental literacy (measured by the MSELS) and to compare these levels both within and across the studies. Through the comparison of these data sets, we could identify schools in which grade level cohorts of students displayed markedly higher levels of environmental literacy variables than their peer cohorts at other schools. However, questions remain concerning the magnitude and influence of variables that were reported on those survey forms, as well as the relationships among variables measured by the MSELS scales. The major research questions that will guide this Phase are: 1) To what extent do the variables measured by these Forms during Phase One and Two appear to have contributed to or influenced students' environmental literacy scores; 2) How do these variables appear to interact with each other; and 3) What are the relative contributions of knowledge, affect, and skill variables to actual commitment or behavior. The resulting analyses of this study will be shared both through peer-reviewed publications as well as appropriate professional conferences.