MGLS 2017 Assessment Item Level Files (ILF)

Title:	MGLS 2017 Assessment Item Level Files (ILF)
Description:	The Middle Grades Longitudinal Study of 2017-18 (MGLS:2017) measured student achievement in mathematics and reading along with executive function. The MGLS:2017 ILF contains the item level data from these direct measures that can be used in psychometric research for replicating or enhancing the scoring found in the MGLS:2017 RUF or in creating new scores. The Middle Grades Longitudinal Study of 2017–18 (MGLS:2017) Assessment Item Level File (ILF) contains two .csv files representing the two rounds of data collection: the MGLS:2017 Main Study (MS) Base Year (MS1) and the Main Study Follow-up (MS2) files.
Online Availability:	How to obtain restricted-use licenses.
Cover Date:	August 2023
Web Release:	August 16, 2023
Print Release:	August 28, 2023
Publication #:	NCES 2023014 General Ordering Information
Center/Program:	NCES
Authors:	U.S. Department of Education, Washington, DC: National Center for Education Statistics.
Type of Product:	Data File
Survey/Program Areas:	Middle Grades Longitudinal Study of 2017–18 (MGLS:2017)
Keywords:	Ability Academic English Achievement • academic achievement • achievement gap Achievement (Student) • mathematics • reading Assessment Criterion Validity Data Collection Differential Item Function Educational Attainment Educational Research Eighth-Graders English Language Learners (ELL) English Language Proficiency English Learners (EL) Executive Function Factor Analysis Foundational Skills Large Scale Assessment Limited English Proficient Students Literacy • adolescent literacy Longitudinal Studies Mathematics • mathematics tests Measurement Error Studies Middle Grades • education Middle School Predictive Validity Process Data Public Schools • elementary/secondary Reading Reliability Research Design Research Methodology School Readiness • measures Students • middle grades • middle school • reading and writing • transition to high school Testing • standardized tests • test scores • test use Validity Word Recognition
Questions:	For questions about the content of this Data File, please contact: Carolyn Grim.