<p>I know this has probably been asked but I couldn't find a reliable thread. </p>
<p>Does "Number of years after 12th" mean literally how many years after 12th was it when I was at that job or how many years was I at that specific job, etc.?</p>
<p>I took it to mean the number of years that you have been involved in the activity since the “12+” already indicates that you’re doing it after high school.</p>