In 1973, an improved scheme of allowances was introduced to assist parents of children who did not have reasonable access to school services as a result of their geographic location. The quality of health care in rural areas was also improved via the development of a regional hospitals program and promotion of community-based health services. The Trade Union Training Authority Act of 1975 set up a national college and state centres designed to educate trade union leaders in various aspects of industrial relations. The Commonwealth Secondary Scholarship Scheme was replaced by a system of secondary allowances which were made available on the basis of financial need. An isolated children's allowance was introduced to compensate the educational disadvantages faced by children living in remote parts of the country. Greater spending was allocated to the arts, while spending on urban and regional development was accelerated, which contributed to a significant rise in the number of Australian households connected to a sewerage services. A School Dental Service Scheme was also introduced, providing free dental care for schoolchildren. Via grants to the states, the Whitlam Government funded the construction of 18,500 homes for low income earners from 1973 to 1975.