HPCAT hosted a group of eight graduate students as part of the 2015 National School on Neutron and X-ray Scattering, held from June 15-17, 2015 at the Advanced Photon Source. The School is jointly conducted by Argonne National Laboratory and Oak Ridge National Laboratory. At HPCAT, beamline scientists Changyong Park and Dimitri Popov gave the students hands-on training for high-pressure x-ray diffraction experiment using a diamond anvil cell and a practical guide to the data analysis. The School educates graduate students on the use of major neutron and x-ray facilities. Students conduct short experiments at Argonne's Advanced Photon Source and at Oak Ridge National Laboratory's Spallation Neutron Source and High Flux Isotope Reactor, and receive hands-on experience for using neutron and synchrotron sources.