Any school that focuses on the money and not the avoda Hakodesh of chinuch of Torah children is a messed up school and will not be matzliach from Hashem. A school is not a business that someone invests in and Mrs profit off each child that goes to his school. It is a building of kodesh kodoshim with unlimited reward for the future directly from Hashem and for anyone that helps support Torah school or Mesivta etc…
Best invest you can make in your life is investing in tzedaka/charity it’s an internal investment that can’t go bad and you take with you forever. All of a person’s physical money is worthless to him after you leave to the olam Haemes. Tzedaka/charity you keep forever and take with you for all eternity.