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 Pub Number  Title  Date
NCES 2019100 ECLS-K:2011 Restricted-Use Kindergarten-Fifth Grade Data File and Electronic Codebook
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study that followed a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students were in fifth grade. This restricted-use data file includes data from every round of data collection: the fall and spring of the 2010-11 school year, when all of the students were in kindergarten; the fall and spring of the 2011-12 school year, when most of the students were in first grade; the fall and spring of the 2012-13 school year, when most of the students were in second grade; the spring of 2014, when most of the students were in third grade; the spring of 2015, when most of the students were in fourth grade, and the spring of 2016, when most of the students were in fifth grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in each year of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
2/22/2019
NCES 2018021 Trends in International Mathematics and Science Study (TIMSS) 2015 U.S. public-use datafile
This datafile contains the U.S. TIMSS 2015 data, including data that were collected only in the United States and not included on the international database available from the IEA. The additional data relate to the race and ethnicity of students and the percentage of students in a school eligible for the Federal free and reduced-price lunch program, among other variables. This datafile is intended to be used in conjunction with the international datafile available from the IEA.

A User Guide to the data is included in the U.S. TIMSS 2015 and TIMSS Advanced 1995 & 2015 Technical Report, which is available online separately (publication number 2018020).
11/1/2018
NCES 2018022 Trends in International Mathematics and Science Study (TIMSS) 2015 U.S. restricted-use datafile
This datafile contains school IDs that can be linked to the public-use U.S. TIMSS 2015 datafile to allow for merging with data from the Common Core of Data (CCD) and Private School Universe Survey (PSS). This datafile can only be obtained by those who apply for a restricted-use license through NCES. Information on how to merge the restricted-use datafile with the U.S. TIMSS 2015 public-use datafile is included.

A User Guide to the data is included in the U.S. TIMSS 2015 and TIMSS Advanced 1995 & 2015 Technical Report, which is available online separately (publication number 2018020).
11/1/2018
NCES 2018127 Trends in International Mathematics and Science Study (TIMSS) Advanced 1995 and 2015 U.S. public-use datafile
This datafile contains the U.S. TIMSS Advanced 2015 data, including data that were collected only in the United States and not included on the international database available from the IEA. The additional data relate to the race and ethnicity of students and the percentage of students in a school eligible for the Federal free and reduced-price lunch program, among other variables. This datafile is intended to be used in conjunction with the international datafile available from the IEA.

A User Guide to the data is included in the U.S. TIMSS 2015 and TIMSS Advanced 1995 & 2015 Technical Report, which is available online separately (publication number 2018020).
11/1/2018
NCES 2018128 Trends in International Mathematics and Science Study (TIMSS) Advanced 1995 and 2015 U.S. restricted-use datafiles
This datafile contains school IDs that can be linked to the public-use U.S. TIMSS Advanced 1995 and 2015 datafiles to allow for merging with data from the Common Core of Data (CCD) and Private School Universe Survey (PSS). This datafiles can only be obtained by those who apply for a restricted-use license through NCES. Information on how to merge the restricted-use datafiles with the U.S. TIMSS Advanced 1995 and 2015 public-use datafiles is included.

A User Guide to the data is included in the U.S. TIMSS 2015 and TIMSS Advanced 1995 & 2015 Technical Report, which is available online separately (publication number 2018020).
11/1/2018
NCES 2018083 ECLS-K:2011 Restricted-Use Kindergarten-Fourth Grade Data File and Electronic Codebook
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study that followed a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students were in fifth grade. This restricted-use data file includes information collected during the fall and spring of the 2010-11 school year, when all of the students were in kindergarten; the fall and spring of the 2011-12 school year, when most of the students were in first grade; the fall and spring of the 2012-13 school year, when most of the students were in second grade; the spring of 2014, when most of the students were in third grade; and the spring of 2015, when most of the students were in fourth grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in each year of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
5/31/2018
NCES 2018033 ECLS-K:2011 Public-Use Kindergarten-Fourth Grade Data File and Electronic Codebook
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study following a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students are expected to be in fifth grade. This public-use data file includes information collected during the fall and spring of the 2010-11 school year, when all of the students were in kindergarten; the fall and spring of the 2011-12 school year, when most of the students were in first grade; the fall and spring of the 2012-13 school year, when most of the students were in second grade; the spring of 2014, when most of the students were in third grade; and the spring of 2015, when most of the students were in fourth grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in each year of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
3/27/2018
NCES 2017120 Program for International Student Assessment (PISA) 2015 United States public-use data files
The data files include the U.S. PISA 2015 data files for students, teachers, and principals/schools, and include additional variables only available at the national level (e.g., student race/ethnicity). The public-use data files can be downloaded and analyzed by researchers interested in conducting secondary analyses. In addition to the U.S. data files, the product also includes a README file, illustrative merge code, a Quick Guide, variable codebooks, SAS and SPSS control files, and record layout files. The data files are presented in ASCII, and can be imported into any number of statistical programs, such as SAS, SPSS, or STATA. These public-use data files can be used on their own or merged with the international PISA database available for download from the OECD PISA website at http://www.oecd.org/pisa/data/. Users of the U.S. PISA 2015 data files are encouraged to refer to the Technical Report which provides details on the methods and operations used in collecting PISA data in the United States. The PISA 2015 Technical Report can be found at https://nces.ed.gov/pubsearch/pubsinfo.asp?pubid=2017095.
12/19/2017
NCES 2017121 Program for International Student Assessment (PISA) 2015 United States Restricted-use Data File
This CD-ROM contains PISA 2015 restricted-use data for the United States. The CD-ROM includes the data file, a codebook, instructions on how to merge with the U.S. PISA 2015 public-use dataset (NCES 2017-120), and a cross-walk to assist in merging with other public datasets, such as the Common Core of Data (CCD) and Private School Survey (PSS). As these data files can be used to identify respondent schools, a restricted-use license must be obtained before access to the data is granted. Click on the restricted-use license link below for more details.
12/19/2017
NCES 2017286 ECLS-K:2011 Public-Use Kindergarten-Second Grade Data File and Electronic Codebook
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study following a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students are expected to be in fifth grade. This public-use data file includes information collected during the fall and spring of the 2010-11 school year, when all of the students were in kindergarten, the fall and spring of the 2011-12 school year, when most of the students were in first grade, and the fall and spring of the 2012-13 school year, when most of the students were in second grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in the first two years of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
3/1/2017
NCES 2017048 Performance of U.S. 15-Year-Old Students in Science, Reading, and Mathematics Literacy in an International Context: First Look at PISA 2015
This report provides international comparisons of student performance in science, reading, and mathematics literacy from the PISA 2015 assessment. In 2015, 70 education systems, including the United States, participated in PISA. In addition, Massachusetts, North Carolina, and Puerto Rico participated in PISA separately from the nation.

The report includes average scores in the three subject areas; score gaps across the three subject areas between the top (90th percentile) and low performing (10th percentile) students; the percentages of students reaching selected PISA proficiency levels; and trends in U.S. performance in the three subjects over time.

Additional findings from PISA 2015 are available on the NCES PISA website at http://nces.ed.gov/surveys/pisa/pisa2015/.
12/6/2016
NCES 2017002 Highlights from TIMSS and TIMSS Advanced 2015: Mathematics and Science Achievement of U.S. Students in Grades 4 and 8 and in Advanced Courses at the End of High School in an International Context
The Trends in International Mathematics and Science Study (TIMSS) 2015 is the sixth administration of this international comparative study since 1995 when first administered. TIMSS is used to compare over time the mathematics and science knowledge and skills of fourth- and eighth-graders. TIMSS is designed to align broadly with mathematics and science curricula in the participating countries. The results, therefore, suggest the degree to which students have learned mathematics and science concepts and skills likely to have been taught in school. In 2015, TIMSS was administered in 49 IEA member countries and 6 other education systems at grade 4, and in 38 IEA member countries and 6 other education systems at grade 8.

TIMSS Advanced assesses the advanced mathematics and physics knowledge and skills of students at the end of high school who have taken courses in advanced mathematics and physics. TIMSS Advanced 2015 represents only the second administration in which the United States has participated since the first administration in 1995, and is designed to align broadly with the advanced mathematics and physics curricula in the participating countries. The results, therefore, suggest the degree to which students have learned the advanced mathematics and physics concepts and skills likely to have been taught in school. Nine countries participated in TIMSS Advanced 2015.

The focus of the report is on the performance of U.S. students relative to their peers in other countries on TIMSS and TIMSS Advanced 2015, and, for TIMSS results, on changes in achievement since 2011 and 1995. For a number of participating countries and education systems, changes in achievement can be documented over the last 20 years, from 1995 to 2015. This report also describes the characteristics of students who participated in the advanced mathematics and physics assessments at the end of high school, and describes the performance of males and females in these subjects. In addition, it includes achievement in Florida, a U.S. state that participated in TIMSS both as part of the U.S. national sample of public and private schools as well as individually with state-level samples of public schools.

In addition to numerical scale results, TIMSS also includes international benchmarks. The TIMSS international benchmarks provide a way to interpret the scale scores by describing the types of knowledge and skills students demonstrate at different levels along the TIMSS scale.

Additional tables with TIMSS and TIMSS Advanced results will be available on the NCES website at http://nces.ed.gov/timss/timss15.asp.
11/29/2016
NCES 2016080 ECLS-K:2011 Restricted-Use Kindergarten-Third Grade Data File and Electronic Codebook
This CD contains an electronic codebook (ECB), a restricted-use data file, and survey and ECB documentation for the fall and spring kindergarten, fall and spring first-grade, and fall spring second-grade, and spring third-grade rounds of data collection for the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011). The CD includes the user’s manual developed for use with this data file, which focuses on the third-grade round of data collection, as well as the manual released with the Kindergarten Restricted-Use Data File and Electronic Codebook, the manual released with the Kindergarten-First Grade Restricted-Use Data File and Electronic Codebook, and the manual released with the Kindergarten-Second Grade Restricted-Use Data File and Electronic Codebook.
10/17/2016
NCES 2015050 ECLS-K:2011 Restricted-Use Kindergarten-Second Grade Data File and Electronic Codebook
This CD contains an electronic codebook (ECB), a restricted-use data file, and survey and ECB documentation for the fall and spring kindergarten, fall and spring first-grade, and fall and spring second-grade rounds of data collection for the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011). The CD includes the user’s manual developed for use with this data file (NCES 2015-049), which focuses on the second-grade rounds of data collection, as well as the manual released with the Kindergarten Restricted-Use Data File and Electronic Codebook (NCES 2013-061) and the manual released with the Kindergarten-First Grade Restricted-Use Data File and Electronic Codebook (NCES 2015-069).
7/10/2015
NCES 2015086 ECLS-K:2011 Public-Use Kindergarten-First Grade Data File and Electronic Codebook
The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is a longitudinal study following a nationally representative sample of students from their kindergarten year to the spring of 2016, when most of the students are expected to be in fifth grade. This public-use data file includes information collected during the fall and spring of the 2010-11 school year, when all of the students were in kindergarten, and the fall and spring of the 2011-12 school year, when most of the students were in first grade. The file includes information collected from the students, their parents/guardians, their teachers, and their school administrators in the first two years of the study. It also includes information collected in the spring of 2011 from their kindergarten-year before- and after-school care providers.
4/22/2015
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