Tertiary and technical education was one of the key forces underlying the growth of key groupings within this socio-economic formation. The state's education expansion programme of the later 1950s, boosted by overseas scholarship schemes, produced an educated and well-paid professional 1970, by virtue the concentration of administration and business in Bangkok, three quarters of Thailand's university graduates resided in the metropolis(Thai University Research Associates 256). This also concentrated consumption power in the metropolis. The growing disparity in per capita income between the Bangkok and the provinces was a clear indication of this trend. Between 1960 and 1970 per capita income the Bangkok-Thonburi area grew at a rate higher than the nation's average, with income for the metropolis averaging 11234 baht in 1920 compared with bait for whole(Keyes 1989: 15g: Prasert 1987: 286).