Take business courses in addition, or instead. Most of your photos are good moments with good expressions. There are some issues that could easily be solved with a few minutes in Adobe Camera Raw and Photoshop. Fixes are easier if you have raw files because there is so much more data available. As EyeDocPhotog has pointed out you have some nice shots in your portfolio. Actually, I like most of them. The photography business is 80% business and 20% photography. Hence, the business courses recommendation.
If you are planning to become a teacher, photography courses might be the better choice. Holding a teaching certificate, you could teach photography, which might be more enjoyable than doing photography as a business.