While on student visa in the United States you are required to comply with the rules and regulations to maintain your visa status. Make sure your status is always current and violations of any visa regulations can lead to fines and deportation.
SEVIS(Student & Exchange Visitor Information System) requirements
SEVIS requirements want you to keep your status information updated at all times. This would require you to inform about any changes in :
Change in study plans
Change of address
Change in program of study
Extension in programs currently undertaken
Application in change in legal status
You are required to be enrolled in full-time studies at institution approved by USCIS. Full-time, would mean taking certain number of credit hours per semester. You can check with you your relevant university for their full-time work load requirments.
A student attending school on a quarter or trimester calendar takes only one vacation a year during any one of the quarters or trimesters.