The letter from Jean Berry is a gross stereotypical misrepresentation of large families.
My husband and I raised eight children. We were able to give them parental time with homework, scouting, camping outings, trips, visits to parks, museums, zoos, etc. We did not give them a college education, but we helped them to get one as they helped themselves. All of our children have at least one bachelor's degree. All were excellent students throughout their school lives. Several were valedictorians, National Merit scholars, etc. One graduated Phi Beta Kappa from Stanford University. One has a Ph.D., three have master's degrees. Another is in a doctoral program in computer science after earning two bachelor's degrees. I feel certain that others will pursue more advanced degrees as their circumstances permit, as they love to learn.