Part A. Average State-Wide Scores

Test

Mean

Standard deviation

Ratio of standard deviation to mean

4^th Grade reading

220.73

5.93

2.70%

4^th Grade mathematics

241.19

5.06

2.10

8^th Grade reading

266.11

4.70

1.77

8^th Grade mathematics

283.71

6.56

2.31

Part B: Some Disaggregated Results

Highest state score

4^th Grade reading

Maryland, Massachusetts, New Hampshire

232

Lowest state score

4^th Grade reading

Washington DC, West Virginia

206

Highest state score

4^th Grade mathematics

Massachusetts, Minnesota, New Hampshire

253

Lowest state score

4^th Grade mathematics

New Mexico, Washington DC

229

Highest state score

8^th Grade reading

Massachusetts

277

Lowest state score

8^th Grade reading

Washington DC

246

Highest state score

8^th Grade mathematics

Massachusetts

301

Lowest state score

8^th Grade mathematics

Washington DC

265