CalSTRS primary responsibility is to provide retirement related benefits and services to teachers in public schools and community colleges. * Largest U.S. teachers' retirement fund * Second largest U.S. public pension fund * Membership: 800,000 * Assets : approximately $225 billion as of March 31, 2018. CalSTRS income is derived from member contributions, employing school district contributions, investment earnings, and appropriations from the General Fund. The cost of administration is paid from the State Teachers? Retirement Fund. CalSTRS is responsible for the determination and payment of benefits to members, retirees, and beneficiaries, and for the distribution of information to all members, employers, and other interested groups. CalSTRS provides three basic benefits: (1) Service Retirement, (2) Survivor, and (3) Disability.