r-packages
TriMatch
Propensity score matching for non-binary treatments. ipeds
An R package to interface with the Integrated Postsecondary Education Data System.
mldash
Machine Learning Dashboard.
multilevelPSA
An R package for estimating and visualizing multilevel propensity score models. 
naep
An R package to interface with the National Assessment of Educational Progress (NAEP) restricted use databases. This includes access any analyzing data using the replicate weights and multiple plausible values.
pisa
A data-only R package for the 2009 Programme of International Student Assessment (PISA) conducted by Organisation for Economic Co-operation and Development (OECD).
qualtrics
An R package to interface with the Qualtrics.com survey system.
ruca
An R package to get Rural-Urban Commuting Area (RUCA) Codes from zip codes.
sqlutils
The sqlutils package provides a set of utility functions to help manage a library of structured query language (SQL) files. 
timeline
An R package to create timeline figures. 