1 INTRODUCTION  
2 MOCK GALAXY FLUX DATA  
2.1 The CSS-OS Filter Definition  
2.2 Galaxy Catalog  
2.3 Flux and Error Estimation  
3 PHOTO-Z CODE  
4 PHOTO-Z DEPENDENCY  
4.1 Dependency of Photo-Z Accuracy on Each Band  
4.2 Dependency of Photo-Z Accuracy on Filter Parameters  
5 SUMMARY