Data Data Reports Survey Instruments Publications LCCN – SILCC Surveys: Data Students and Instructors of Language at Community Colleges (SILCC) Survey Data. Download the data for your own use and investigation. Student Data Download Student Codebook File in PDF Format Download Student Data File in CSV Format Download Student Data Files inSPSS (.sav) Format Instructor Data Download Instructor Codebook File in PDF Format Download Instructor Data File in CSV Format Download Instructor Data Files inSPSS (.sav) Format This entry is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.