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\subsubsection{Modeling stellar spectra in the era of massive surveys.} The measurement of stellar parameters from spectra underpins much of our knowledge in topics ranging from the build up of the Milky Way to the mixing processes in the outer regions of stars. This field is undergoing rapid changes thanks both to a rapid growth in observational datasets (APOGEE, GALAH, Gaia-ESO, etc) and an explosion of new tools for analyzing such large and rich datasets. This session will bring together communities working on detailed (3D, NLTE) spectroscopic models, classic 1D models and data-driven models (e.g., the Cannon) and will explore the advantages and limitations of these techniques in the context of modern spectroscopic surveys.  %[suggested by Charlie Conroy]  \subsection{Star \subsubsection{Star  Formation} The last decade or more of observational star formation has been characterized by wide-field, multi-wavelength surveys. These studies have provided a rich database across star formation, from the collapse of filaments to the identification of transitional discs. For the first time GAIA will be a major contributor to our understanding of the structure of young cluster. While GAIA will change our understanding of the structure of Young Clusters and how they relate to the structure of the near by galaxy, High resolution observations, including those from ALMA have given stunning visual confirmation of structures hinted at with spectra and photometry. One the other hand new remarkable computer simulation predict that will have even more to find when JWST comes on line, soon after the conclusion of this meeting. \subsubsection{Your suggested science theme here}