I’ve got two who graduated from the same college. One earns an enviable salary (not a stem major) and the other much less. Which do you want to use for your figures? Both highly educated and able.
You may benefit more from assessing your kid’s drives, qualifications, and how he/she sets and reaches goals, not how many grads get jobs in banking, high tech, medicine versus those happily working at lower paying, fulfilling, equally meaningful careers that just don’t have as high a salary.