About the visa for studying abroad ... is the visa valid after dropping out of school?

First, the general school will start when you drop out of school and inform the Immigration Bureau that you have dropped out of school. It is estimated that your visa will be invalidated. Because it is impossible for others to drop out of school, your lover's family will be responsible for anything that happens to you, so they will definitely report you to the Immigration Bureau, so everything after you drop out of school has nothing to do with them. Second, even if they don't announce your withdrawal, your visa is still valid, and you still need to apply for a tourist visa to visit other countries. The student visa you apply for is limited to the country where you study. What should I do or apply for tourist visas in other countries?