The courses were compulsory within the mathematics subject cluster and were revised in 1990 and 1997 to respond to technological developments. When Thailand introduced a new basic education curriculum in 2001, it included standards for what students in all 12 grades should know about ICT. Technological education comprised ICT and content on design and technology. Thailand expanded its efforts to integrate ICT in education by developing a series of four-year strategy documents and amendments to the basic education curriculum.