NAEP Trial Urban District Assessment (TUDA) results in mathematics and reading are based on representative samples of 1,100 to 2,300 public school students at grade 4 and 900 to 2,100 public school students at grade 8 in each participating urban district in 2013. Twenty-one urban districts participated in the 2013 assessments. The assessments administered in TUDA are exactly the same as those given nationally and use identical administration procedures. Changes in students' performance over time are noted only if the differences in scores or percentages are determined to be statistically significant. This executive summary highlights study results in the following areas: (1) Have students in urban districts made progress since 2011? (2) Which student groups are making progress in urban districts? and (3) How are students in urban districts performing? [For the full report, see ED544551.]