This cannot be emphasized enough as life continues to place challenges ahead of you and the more you know the smoother things will progress. You can see that there are people who spend decades in school and classes. It's because these people realize that the better one's knowledge of their occupation, environment, and self leads to less confusion and errors in one's daily goings on.
Take for example the executive who may well have their bachelor's degree. Their business is off to a good start but then the industry they're in suddenly takes a different turn. The fundamental principles of that industry divert in such a manner that if the executive doesn't keep abreast of what is going on they'll then be left behind and at the mercy of their competition. It behooves them to get wise to what is going on and that might call for taking new classes in their area of business. Not necessarily to get another degree but to enhance what they know under smaller tutelage. Matter of fact, the executive might need to get their senior staff to spark up their knowledge of their business by taking classes or having consultants and tutors come in. In the short term and long term such endeavors do prove equitable.
As for the mom at home, there's nothing wrong with taking on more classes to be able to take on those opportunities that spring up now and then. It can be to further the education she already has or to prepare herself for the family’s expansion. For example let's say the property will add on new acreage. It would benefit her to be able to better manage it say with landscaping or agricultural interests. Each of these pursuits will add valuable equity to the home and allow her more control over the estate. It might be best for mom and dad to both take courses. Many local community colleges have college credit courses to get people up and running in their lives. Often taking such courses has the benefit of lowering insurance rates. It doesn't matter what you study as long as it's applicable to some area of your life. Even taking defensive driving courses can propel you into a more equitable existence by showing your auto insurance and other insurance interests that you've taken the responsibility to improve yourself thus preventing the possibility of an accident.
There are culinary classes, nutrition, car repair, gardening, health and fitness courses that don't cost very much and in many cases you can get financial support or discounts. As mentioned earlier making such educational choices a family affair enhances the value of yourself and your family and estate no matter what it's size is.
Hence if it's a higher education like getting your bachelors or even masters and PhD., to just getting in those classes and courses that enhance your life, continuing your education is a vital part of life's experience and a way of investing in the most important thing, yourself!