As OrphanCrow correctly states, the teaching stems from over one hundred years ago:
w1910 March 1, p. 84-85
"we have more than once called attention to in these
columns, that the spread of education,
and increase of wealth, are not tending to make mankind happier, holier or more
content, but rather the reverse."
It was most recently reiterated last year:
June p.21 para. 14 Jehovah Our God Is One Jehovah
the love of the world might involve efforts to attain "great things,"
such as through the pursuit of higher education."
However this does not prevent the WT from reading letters to the congregations asking for highly educated and degree qualified lawyers, or from having doctors, dentists, architects, pilots and fund managers at Bethel.