Exhibit 3.1

Exhibit 3.1

Average Achievement in Science Content Areas

Exhibit 3.1

Footnotes

	States in italics did not fully satisfy guidelines for sample participation rates (see Appendix A for details).
†	Met guidelines for sample participation rates only after replacement schools were included (see Exhibit A.6).
2	National Defined Population covers less than 90 percent of National Desired Population (see Exhibit A.3).
( )	Standard errors appear in parentheses. Because results are rounded to the nearest whole number, some totals may appear inconsistent.

Exhibit 3.1