Can a person teach with a MSW degree?

No, you can become a school social worker but not a school guidance counselor. In order to be a school counselor, you need to meet certification standards by your state which require specific internship experiences under a certified school counselor. When you get your Masters in School Counseling, you spend a year doing this in a school. When you get your MSW, you spend two years doing field work under an MSW, which may or may not be in a school. You may need to select school social work as a concentration in your MSW program, or go back to take Post-Masters course, or be fine with just the MSW-check with your state and MSW programs in your area.

An MSW is a great degree, but many, many of the jobs exist outside of a school setting. A Masters in School Counseling, is a way to be sure you will work within a school, but the degree is limiting outside of that setting. And when jobs are hard to find, you may wish you had an MSW.