Although you are not likely to have much direct contact with the various immigration services, you should be fully aware of the primary conditions imposed by the US Immigration and Customs Enforcement for you to retain your F-1 status. Violation of any of these conditions could lead to serious trouble in the form of investigations, hearings, or even deportation:
USICE regulations require you to pursue a "full course of study" at Diablo Valley College. A full course of study is defined as at least 12 academic units per semester. You are required to see a DSO at the ISAS office before dropping below 12 units regardless of your reasons. If you do not see a DSO before dropping below 12 units you will be considered immediately out of status. You must check with a DSO to see if you have a valid reason to be below 12 units. If it is your last semester at DVC and you are finishing a program or transferring you are allowed to be below 12 units if you do not NEED 12 to complete your program. HOWEVER, you MUST inform the DSO that it is your last semester.
Your passport must be valid at all times during your stay in the U.S. For passport renewal, contact your consulate (see list of nearby consulates). Do not wait until your passport expires!