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We present the first results of the KMOS Lens-Amplified Spectroscopic Survey(KLASS), a new ESO Very Large Telescope (VLT) large program, doing multi-objectintegral field spectroscopy of galaxies gravitationally lensed behind sevengalaxy clusters selected from the HST Grism Lens-Amplified Survey from Space(GLASS). Using the power of the cluster magnification we are able to reveal thekinematic structure of 25 galaxies at $0.7 \lesssim z \lesssim 2.3$, in fourcluster fields, with stellar masses $8 \lesssim \log{(M_\star/M_\odot)}\lesssim 11$. This sample includes 5 sources at $z>1$ with lower stellar massesthan in any previous kinematic IFU surveys. Our sample displays a diversity inkinematic structure over this mass and redshift range. The majority of ourkinematically resolved sample is rotationally supported, but with a lower ratioof rotational velocity to velocity dispersion than in the local universe,indicating the fraction of dynamically hot disks changes with cosmic time. Wefind no galaxies with stellar mass $<3 \times 10^9 M_\odot$ in our sampledisplay regular ordered rotation. Using the enhanced spatial resolution fromlensing, we resolve a lower number of dispersion dominated systems compared tofield surveys, competitive with findings from surveys using adaptive optics. Wefind that the KMOS IFUs recover emission line flux from HST grism-selectedobjects more faithfully than slit spectrographs. With artificial slits weestimate slit spectrographs miss on average 60% of the total flux of emissionlines, which decreases rapidly if the emission line is spatially offset fromthe continuum.

First Results from the KMOS Lens-Amplified Spectroscopic Survey (KLASS): Kinematics of Lensed Galaxies at Cosmic Noon