In my work as a volunteer chaplain in the county corrections center, the vast majority of  men and women I speak with grew up in horribly dysfunctional homes where they were left to fend for themselves. They were never taught personal grooming, how to apply for a job, much less the social graces. There's no way to calculate how this impedes and hinders their way in life. 

My Mother grew up in a loving family and had five sisters. They lived simply and were what we might call, Lower Middle Class. Even so, each of the sisters were sent to "Charm School." Charm school in the forties was a type of etiquette or finishing school, where women were taught the social graces, personal grooming, and how to present oneself in polite society.  Here is a summary of what they were taught.

1. Poise and Deportment:

How to walk gracefully

How to sit and stand with proper posture

 How to enter and exit a room with elegance

 2. Etiquette and Manners:

Table manners and formal dining etiquette

How to greet others and make polite conversation

Social customs for different occasions (e.g., weddings, dances, tea parties)

3. Grooming and Personal Care:

 Skincare, hair styling, and hygiene

 Makeup application and wardrobe coordination

 Voice modulation and diction

4.  Dating and Marriage Preparation:

How to behave on a date

The role of a woman in relationships and, eventually, marriage

Often included instruction on being a supportive wife and mother

5.  Domestic Skills (in some programs):

 Cooking, sewing, entertaining, and home management

There were "charm schools" for men, although not nearly as popular. 

I couldn't help but think how important these skills are for anyone. But sadly many today grow up "feral" or peer raised with little or no instruction, guidance and support, much less, love and security. 

When I was a young boy I always admired my Mother's poise, dignity, charm and manners. I don't know how much of this came from her Mother or from Charm school, but she always held herself with a sense of decorum that I felt and helped shape me in some small way.