Times have changed, but the formula remains stuck in 1949. The wealth disparities between neighboring towns simply did not exist at anything like their current scale. The founders of the regional school system could not have foreseen the inequity their formula has imposed on most towns today.
The very 1960s appeal of the piece was maintained, with a very 2018 sensibility bringing it up-to-date in feel while leaving things as they were written more than 50 years ago.