Scintillator-based calorimeter is considered as a good choice for the linear collider for its design flexibility and in-expensive cost. To achieve fine granularity with the scintillator, we proposed using strip scintillators and evaluated the performance of the test module with beams. In this article, we compare the testbeam results with simulations, especially for the lateral shower spreads which are important for measuring jet energies. In addition, preliminary studies of GEANT4 with the simple sampling configuration are described.